221525107037044 has 48 divisors (see below), whose sum is σ = 391027048191360. Its totient is φ = 109805363527680.

The previous prime is 221525107036963. The next prime is 221525107037057. The reversal of 221525107037044 is 440730701525122.

It is a happy number.

221525107037044 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×221525107037044² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1502229364 + ... + 1502376820.

It is an arithmetic number, because the mean of its divisors is an integer number (8146396837320).

Almost surely, 2^{221525107037044} is an apocalyptic number.

It is an amenable number.

221525107037044 is a deficient number, since it is larger than the sum of its proper divisors (169501941154316).

221525107037044 is a wasteful number, since it uses less digits than its factorization.

221525107037044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 151288 (or 151286 counting only the distinct ones).

The product of its (nonzero) digits is 470400, while the sum is 43.

The spelling of 221525107037044 in words is "two hundred twenty-one trillion, five hundred twenty-five billion, one hundred seven million, thirty-seven thousand, forty-four".