221411634520144 has 20 divisors (see below), whose sum is σ = 439448091686100. Its totient is φ = 108005675375360.

The previous prime is 221411634520003. The next prime is 221411634520187. The reversal of 221411634520144 is 441025436114122.

It can be written as a sum of positive squares in 2 ways, for example, as 46682892270144 + 174728742250000 = 6832488^2 + 13218500^2 .

It is a super-2 number, since 2×221411634520144² (a number of 29 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 221411634520097 and 221411634520106.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 168758867119 + ... + 168758868430.

It is an arithmetic number, because the mean of its divisors is an integer number (21972404584305).

Almost surely, 2^{221411634520144} is an apocalyptic number.

It is an amenable number.

221411634520144 is a deficient number, since it is larger than the sum of its proper divisors (218036457165956).

221411634520144 is a wasteful number, since it uses less digits than its factorization.

221411634520144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 337517735598 (or 337517735592 counting only the distinct ones).

The product of its (nonzero) digits is 184320, while the sum is 40.

The spelling of 221411634520144 in words is "two hundred twenty-one trillion, four hundred eleven billion, six hundred thirty-four million, five hundred twenty thousand, one hundred forty-four".