12212500521220 has 96 divisors (see below), whose sum is σ = 26133712214400. Its totient is φ = 4793028117504.

The previous prime is 12212500521073. The next prime is 12212500521283. The reversal of 12212500521220 is 2212500521221.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 560890254 + ... + 560912026.

It is an arithmetic number, because the mean of its divisors is an integer number (272226168900).

Almost surely, 2^{12212500521220} is an apocalyptic number.

12212500521220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12212500521220 is an abundant number, since it is smaller than the sum of its proper divisors (13921211693180).

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

12212500521220 is a wasteful number, since it uses less digits than its factorization.

12212500521220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24277 (or 24275 counting only the distinct ones).

The product of its (nonzero) digits is 1600, while the sum is 25.

Subtracting from 12212500521220 its reverse (2212500521221), we obtain a palindrome (9999999999999).

The spelling of 12212500521220 in words is "twelve trillion, two hundred twelve billion, five hundred million, five hundred twenty-one thousand, two hundred twenty".