221525041536402 has 32 divisors (see below), whose sum is σ = 458684903839680. Its totient is φ = 71239846292160.

The previous prime is 221525041536289. The next prime is 221525041536499. The reversal of 221525041536402 is 204635140525122.

It is a super-2 number, since 2×221525041536402² (a number of 29 digits) contains 22 as substring.

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, 495931249 + ... + 496377732.

It is an arithmetic number, because the mean of its divisors is an integer number (14333903244990).

Almost surely, 2^{221525041536402} is an apocalyptic number.

221525041536402 is an abundant number, since it is smaller than the sum of its proper divisors (237159862303278).

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

221525041536402 is a wasteful number, since it uses less digits than its factorization.

221525041536402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 992310298.

The product of its (nonzero) digits is 576000, while the sum is 42.

The spelling of 221525041536402 in words is "two hundred twenty-one trillion, five hundred twenty-five billion, forty-one million, five hundred thirty-six thousand, four hundred two".