221426675232056 has 64 divisors (see below), whose sum is σ = 486106451712000. Its totient is φ = 92573458871040.

The previous prime is 221426675232053. The next prime is 221426675232067. The reversal of 221426675232056 is 650232576624122.

It is a junction number, because it is equal to n+sod(n) for n = 221426675231989 and 221426675232007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221426675232053) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18578525 + ... + 28071603.

It is an arithmetic number, because the mean of its divisors is an integer number (7595413308000).

Almost surely, 2^{221426675232056} is an apocalyptic number.

It is an amenable number.

221426675232056 is an abundant number, since it is smaller than the sum of its proper divisors (264679776479944).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

221426675232056 is a wasteful number, since it uses less digits than its factorization.

221426675232056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9503292 (or 9503288 counting only the distinct ones).

The product of its (nonzero) digits is 14515200, while the sum is 53.

The spelling of 221426675232056 in words is "two hundred twenty-one trillion, four hundred twenty-six billion, six hundred seventy-five million, two hundred thirty-two thousand, fifty-six".