2021213131210 has 64 divisors (see below), whose sum is σ = 4493587537152. Its totient is φ = 637420202496.

The previous prime is 2021213131187. The next prime is 2021213131279. The reversal of 2021213131210 is 121313121202.

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, 3666699 + ... + 4181758.

It is an arithmetic number, because the mean of its divisors is an integer number (70212305268).

Almost surely, 2^{2021213131210} is an apocalyptic number.

2021213131210 is an abundant number, since it is smaller than the sum of its proper divisors (2472374405942).

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

2021213131210 is a wasteful number, since it uses less digits than its factorization.

2021213131210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7848767.

The product of its (nonzero) digits is 144, while the sum is 19.

Adding to 2021213131210 its reverse (121313121202), we get a palindrome (2142526252412).

The spelling of 2021213131210 in words is "two trillion, twenty-one billion, two hundred thirteen million, one hundred thirty-one thousand, two hundred ten".