213122200220 has 24 divisors (see below), whose sum is σ = 448707168000. Its totient is φ = 85029728192.

The previous prime is 213122200211. The next prime is 213122200259. The reversal of 213122200220 is 22002221312.

213122200220 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×213122200220² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13689020 + ... + 13704579.

It is an arithmetic number, because the mean of its divisors is an integer number (18696132000).

Almost surely, 2^213122200220 is an apocalyptic number.

213122200220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

213122200220 is an abundant number, since it is smaller than the sum of its proper divisors (235584967780).

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

213122200220 is a wasteful number, since it uses less digits than its factorization.

213122200220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27393997 (or 27393995 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 17.

Adding to 213122200220 its reverse (22002221312), we get a palindrome (235124421532).

The spelling of 213122200220 in words is "two hundred thirteen billion, one hundred twenty-two million, two hundred thousand, two hundred twenty".