220505502172 has 12 divisors (see below), whose sum is σ = 385928978176. Its totient is φ = 110240079840.

The previous prime is 220505502143. The next prime is 220505502211. The reversal of 220505502172 is 271205505022.

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, 3128604 + ... + 3198307.

Almost surely, 2^220505502172 is an apocalyptic number.

It is an amenable number.

220505502172 is a deficient number, since it is larger than the sum of its proper divisors (165423476004).

220505502172 is a wasteful number, since it uses less digits than its factorization.

220505502172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6335628 (or 6335626 counting only the distinct ones).

The product of its (nonzero) digits is 14000, while the sum is 31.

The spelling of 220505502172 in words is "two hundred twenty billion, five hundred five million, five hundred two thousand, one hundred seventy-two".