| Base | Representation |
|---|---|
| bin | 1001100110101011000100… |
| … | …01110101100000010110100 |
| 3 | 2202210001102021012220221220 |
| 4 | 10303111202032230002310 |
| 5 | 10232012231031241040 |
| 6 | 112530221200310340 |
| 7 | 4306604225525235 |
| oct | 463254216540264 |
| 9 | 82701367186856 |
| 10 | 21120002212020 |
| 11 | 6802a40718a68 |
| 12 | 24512460123b0 |
| 13 | ba27b905c70a |
| 14 | 5302dc02508c |
| 15 | 2695a688d2d0 |
| hex | 1335623ac0b4 |
21120002212020 has 192 divisors, whose sum is σ = 63216361764864. Its totient is φ = 5255667648000.
The previous prime is 21120002212019. The next prime is 21120002212021. The reversal of 21120002212020 is 2021220002112.
It is an interprime number because it is at equal distance from previous prime (21120002212019) and next prime (21120002212021).
It is a super-4 number, since 4×211200022120204 (a number of 54 digits) contains 4444 as substring.
It is a Harshad number since it is a multiple of its sum of digits (15).
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (21120002212021) by changing a digit.
It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 50408395 + ... + 50825645.
It is an arithmetic number, because the mean of its divisors is an integer number (329251884192).
Almost surely, 221120002212020 is an apocalyptic number.
21120002212020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.
It is an amenable number.
It is a practical number, because each smaller number is the sum of distinct divisors of 21120002212020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31608180882432).
21120002212020 is an abundant number, since it is smaller than the sum of its proper divisors (42096359552844).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
21120002212020 is a wasteful number, since it uses less digits than its factorization.
21120002212020 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 418182 (or 418180 counting only the distinct ones).
The product of its (nonzero) digits is 64, while the sum is 15.
Adding to 21120002212020 its reverse (2021220002112), we get a palindrome (23141222214132).
The spelling of 21120002212020 in words is "twenty-one trillion, one hundred twenty billion, two million, two hundred twelve thousand, twenty".
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