221442364565226 has 24 divisors (see below), whose sum is σ = 548333474161824. Its totient is φ = 63269247018600.

The previous prime is 221442364565189. The next prime is 221442364565297. The reversal of 221442364565226 is 622565463244122.

It is a happy number.

221442364565226 is a `hidden beast` number, since 2 + 2 + 1 + 4 + 4 + 2 + 3 + 64 + 56 + 522 + 6 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 878739541800 + ... + 878739542051.

It is an arithmetic number, because the mean of its divisors is an integer number (22847228090076).

Almost surely, 2^{221442364565226} is an apocalyptic number.

221442364565226 is an abundant number, since it is smaller than the sum of its proper divisors (326891109596598).

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

221442364565226 is a wasteful number, since it uses less digits than its factorization.

221442364565226 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1757479083866 (or 1757479083863 counting only the distinct ones).

The product of its digits is 33177600, while the sum is 54.

The spelling of 221442364565226 in words is "two hundred twenty-one trillion, four hundred forty-two billion, three hundred sixty-four million, five hundred sixty-five thousand, two hundred twenty-six".