212100031122 has 32 divisors (see below), whose sum is σ = 491628248064. Its totient is φ = 59746486800.

The previous prime is 212100031103. The next prime is 212100031163. The reversal of 212100031122 is 221130001212.

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, 35560404 + ... + 35566367.

It is an arithmetic number, because the mean of its divisors is an integer number (15363382752).

Almost surely, 2^212100031122 is an apocalyptic number.

212100031122 is an abundant number, since it is smaller than the sum of its proper divisors (279528216942).

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

212100031122 is a wasteful number, since it uses less digits than its factorization.

212100031122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71126854.

The product of its (nonzero) digits is 48, while the sum is 15.

Adding to 212100031122 its reverse (221130001212), we get a palindrome (433230032334).

The spelling of 212100031122 in words is "two hundred twelve billion, one hundred million, thirty-one thousand, one hundred twenty-two".