210112221111220 has 24 divisors (see below), whose sum is σ = 441235995021864. Its totient is φ = 84044825456256.

The previous prime is 210112221111181. The next prime is 210112221111227. The reversal of 210112221111220 is 22111122211012.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 92050131964176 + 118062089147044 = 9594276^2 + 10865638^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (210112221111227) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 30961882 + ... + 37133038.

It is an arithmetic number, because the mean of its divisors is an integer number (18384833125911).

Almost surely, 2^{210112221111220} is an apocalyptic number.

210112221111220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

210112221111220 is an abundant number, since it is smaller than the sum of its proper divisors (231123773910644).

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

210112221111220 is a wasteful number, since it uses less digits than its factorization.

210112221111220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7873539 (or 7873537 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 19.

Adding to 210112221111220 its reverse (22111122211012), we get a palindrome (232223343322232).

The spelling of 210112221111220 in words is "two hundred ten trillion, one hundred twelve billion, two hundred twenty-one million, one hundred eleven thousand, two hundred twenty".