210012122211220 has 72 divisors (see below), whose sum is σ = 513031855268520. Its totient is φ = 72003841459200.

The previous prime is 210012122211211. The next prime is 210012122211271. The reversal of 210012122211220 is 22112221210012.

It can be written as a sum of positive squares in 4 ways, for example, as 17119634457744 + 192892487753476 = 4137588^2 + 13888574^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 389073520 + ... + 389612920.

It is an arithmetic number, because the mean of its divisors is an integer number (7125442434285).

Almost surely, 2^{210012122211220} is an apocalyptic number.

210012122211220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

210012122211220 is an abundant number, since it is smaller than the sum of its proper divisors (303019733057300).

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

210012122211220 is a wasteful number, since it uses less digits than its factorization.

210012122211220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 936713 (or 936704 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 210012122211220 its reverse (22112221210012), we get a palindrome (232124343421232).

The spelling of 210012122211220 in words is "two hundred ten trillion, twelve billion, one hundred twenty-two million, two hundred eleven thousand, two hundred twenty".