221422645221056 has 56 divisors (see below), whose sum is σ = 440609791205376. Its totient is φ = 110402892299520.

The previous prime is 221422645220989. The next prime is 221422645221097. The reversal of 221422645221056 is 650122546224122.

It is a junction number, because it is equal to n+sod(n) for n = 221422645220998 and 221422645221016.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 394576385 + ... + 395137151.

Almost surely, 2^{221422645221056} is an apocalyptic number.

It is an amenable number.

221422645221056 is a deficient number, since it is larger than the sum of its proper divisors (219187145984320).

221422645221056 is a wasteful number, since it uses less digits than its factorization.

221422645221056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 577957 (or 577947 counting only the distinct ones).

The product of its (nonzero) digits is 921600, while the sum is 44.

The spelling of 221422645221056 in words is "two hundred twenty-one trillion, four hundred twenty-two billion, six hundred forty-five million, two hundred twenty-one thousand, fifty-six".