| Base | Representation |
|---|---|
| bin | 1001100110101101010011… |
| … | …10000010010000110111110 |
| 3 | 2202210011111220012200102000 |
| 4 | 10303112221300102012332 |
| 5 | 10232022210230413042 |
| 6 | 112530540224243130 |
| 7 | 4306646036336400 |
| oct | 463265160220676 |
| 9 | 82704456180360 |
| 10 | 21121202201022 |
| 11 | 68034a7017510 |
| 12 | 245151ba704a6 |
| 13 | ba294a84bb91 |
| 14 | 5303b3550b70 |
| 15 | 269626dc574c |
| hex | 1335a9c121be |
21121202201022 has 192 divisors, whose sum is σ = 59570171988480. Its totient is φ = 5485326739200.
The previous prime is 21121202200999. The next prime is 21121202201027. The reversal of 21121202201022 is 22010220212112.
It is a happy number.
21121202201022 is a `hidden beast` number, since 211 + 212 + 0 + 220 + 1 + 0 + 22 = 666.
It is a super-2 number, since 2×211212022010222 (a number of 27 digits) contains 22 as substring.
It is a Harshad number since it is a multiple of its sum of digits (18).
It is a junction number, because it is equal to n+sod(n) for n = 21121202200986 and 21121202201004.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (21121202201027) by changing a digit.
It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 251637622 + ... + 251721542.
It is an arithmetic number, because the mean of its divisors is an integer number (310261312440).
Almost surely, 221121202201022 is an apocalyptic number.
21121202201022 is a gapful number since it is divisible by the number (22) formed by its first and last digit.
It is a practical number, because each smaller number is the sum of distinct divisors of 21121202201022, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29785085994240).
21121202201022 is an abundant number, since it is smaller than the sum of its proper divisors (38448969787458).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
21121202201022 is a wasteful number, since it uses less digits than its factorization.
21121202201022 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 92604 (or 92591 counting only the distinct ones).
The product of its (nonzero) digits is 128, while the sum is 18.
Adding to 21121202201022 its reverse (22010220212112), we get a palindrome (43131422413134).
The spelling of 21121202201022 in words is "twenty-one trillion, one hundred twenty-one billion, two hundred two million, two hundred one thousand, twenty-two".
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