212024420121 has 64 divisors (see below), whose sum is σ = 315704107008. Its totient is φ = 125989613568.

The previous prime is 212024420099. The next prime is 212024420137. The reversal of 212024420121 is 121024420212.

It is not a de Polignac number, because 212024420121 - 2⁹ = 212024419609 is a prime.

It is not an unprimeable number, because it can be changed into a prime (212024420141) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 12693051 + ... + 12709743.

It is an arithmetic number, because the mean of its divisors is an integer number (4932876672).

Almost surely, 2^212024420121 is an apocalyptic number.

It is an amenable number.

212024420121 is a deficient number, since it is larger than the sum of its proper divisors (103679686887).

212024420121 is a wasteful number, since it uses less digits than its factorization.

212024420121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16930.

The product of its (nonzero) digits is 512, while the sum is 21.

Adding to 212024420121 its reverse (121024420212), we get a palindrome (333048840333).

Subtracting from 212024420121 its reverse (121024420212), we obtain a palindrome (90999999909).

The spelling of 212024420121 in words is "two hundred twelve billion, twenty-four million, four hundred twenty thousand, one hundred twenty-one".