212013123220 has 48 divisors (see below), whose sum is σ = 449225038080. Its totient is φ = 84046846464.

The previous prime is 212013123193. The next prime is 212013123239. The reversal of 212013123220 is 22321310212.

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, 1031401 + ... + 1219759.

It is an arithmetic number, because the mean of its divisors is an integer number (9358854960).

Almost surely, 2^212013123220 is an apocalyptic number.

212013123220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

212013123220 is an abundant number, since it is smaller than the sum of its proper divisors (237211914860).

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

212013123220 is a wasteful number, since it uses less digits than its factorization.

212013123220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 188872 (or 188870 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 212013123220 its reverse (22321310212), we get a palindrome (234334433432).

The spelling of 212013123220 in words is "two hundred twelve billion, thirteen million, one hundred twenty-three thousand, two hundred twenty".