212121310123002 has 32 divisors (see below), whose sum is σ = 510367061952000. Its totient is φ = 57416294469168.

The previous prime is 212121310122991. The next prime is 212121310123039. The reversal of 212121310123002 is 200321013121212.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a self number, because there is not a number n which added to its sum of digits gives 212121310123002.

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, 132908088252 + ... + 132908089847.

It is an arithmetic number, because the mean of its divisors is an integer number (15948970686000).

Almost surely, 2^{212121310123002} is an apocalyptic number.

212121310123002 is an abundant number, since it is smaller than the sum of its proper divisors (298245751828998).

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

212121310123002 is a wasteful number, since it uses less digits than its factorization.

212121310123002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 265816178130.

The product of its (nonzero) digits is 288, while the sum is 21.

Adding to 212121310123002 its reverse (200321013121212), we get a palindrome (412442323244214).

The spelling of 212121310123002 in words is "two hundred twelve trillion, one hundred twenty-one billion, three hundred ten million, one hundred twenty-three thousand, two".