212424323121 has 32 divisors (see below), whose sum is σ = 316903065600. Its totient is φ = 140628648960.

The previous prime is 212424323093. The next prime is 212424323131. The reversal of 212424323121 is 121323424212.

212424323121 is a `hidden beast` number, since 2 + 1 + 2 + 424 + 3 + 231 + 2 + 1 = 666.

It is not a de Polignac number, because 212424323121 - 2⁹ = 212424322609 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (212424323131) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2939895 + ... + 3011283.

It is an arithmetic number, because the mean of its divisors is an integer number (9903220800).

Almost surely, 2^212424323121 is an apocalyptic number.

It is an amenable number.

212424323121 is a deficient number, since it is larger than the sum of its proper divisors (104478742479).

212424323121 is a wasteful number, since it uses less digits than its factorization.

212424323121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72166 (or 72160 counting only the distinct ones).

The product of its digits is 4608, while the sum is 27.

Adding to 212424323121 its reverse (121323424212), we get a palindrome (333747747333).

The spelling of 212424323121 in words is "two hundred twelve billion, four hundred twenty-four million, three hundred twenty-three thousand, one hundred twenty-one".