| Base | Representation |
|---|---|
| bin | 1100110111101101001… |
| … | …1110011101010100110 |
| 3 | 210010201200110121100200 |
| 4 | 3031323103303222212 |
| 5 | 12110314200401042 |
| 6 | 245324424051330 |
| 7 | 21655236012111 |
| oct | 3157323635246 |
| 9 | 703650417320 |
| 10 | 221112122022 |
| 11 | 85856034a30 |
| 12 | 36a2a003b46 |
| 13 | 17b0a23017c |
| 14 | a9b7d7d578 |
| 15 | 5b41b6cc4c |
| hex | 337b4f3aa6 |
221112122022 has 96 divisors (see below), whose sum is σ = 525399881760. Its totient is φ = 66648960000.
The previous prime is 221112122003. The next prime is 221112122041. The reversal of 221112122022 is 220221211122.
It is a happy number.
It is an interprime number because it is at equal distance from previous prime (221112122003) and next prime (221112122041).
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 = 221112121986 and 221112122004.
It is a congruent number.
It is an unprimeable number.
It is a pernicious number, because its binary representation contains a prime number (23) of ones.
It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 78939022 + ... + 78941822.
It is an arithmetic number, because the mean of its divisors is an integer number (5472915435).
Almost surely, 2221112122022 is an apocalyptic number.
221112122022 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 221112122022, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (262699940880).
221112122022 is an abundant number, since it is smaller than the sum of its proper divisors (304287759738).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
221112122022 is a wasteful number, since it uses less digits than its factorization.
221112122022 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 4790 (or 4787 counting only the distinct ones).
The product of its (nonzero) digits is 128, while the sum is 18.
Adding to 221112122022 its reverse (220221211122), we get a palindrome (441333333144).
The spelling of 221112122022 in words is "two hundred twenty-one billion, one hundred twelve million, one hundred twenty-two thousand, twenty-two".
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