212121010122 has 64 divisors (see below), whose sum is σ = 514503567360. Its totient is φ = 56988385344.

The previous prime is 212121010043. The next prime is 212121010133. The reversal of 212121010122 is 221010121212.

It is a super-3 number, since 3×212121010122³ (a number of 35 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1803913 + ... + 1917900.

It is an arithmetic number, because the mean of its divisors is an integer number (8039118240).

Almost surely, 2^212121010122 is an apocalyptic number.

212121010122 is an abundant number, since it is smaller than the sum of its proper divisors (302382557238).

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

212121010122 is a wasteful number, since it uses less digits than its factorization.

212121010122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3721907.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 212121010122 its reverse (221010121212), we get a palindrome (433131131334).

The spelling of 212121010122 in words is "two hundred twelve billion, one hundred twenty-one million, ten thousand, one hundred twenty-two".