212231123312013 has 32 divisors (see below), whose sum is σ = 341073912144000. Its totient is φ = 129650455986048.

The previous prime is 212231123312009. The next prime is 212231123312071. The reversal of 212231123312013 is 310213321132212.

212231123312013 is a `hidden beast` number, since 2 + 1 + 2 + 2 + 311 + 2 + 331 + 2 + 0 + 13 = 666.

It is not a de Polignac number, because 212231123312013 - 2² = 212231123312009 is a prime.

It is a super-2 number, since 2×212231123312013² (a number of 29 digits) contains 22 as substring.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212231123312213) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2206693063 + ... + 2206789236.

It is an arithmetic number, because the mean of its divisors is an integer number (10658559754500).

Almost surely, 2^{212231123312013} is an apocalyptic number.

It is an amenable number.

212231123312013 is a deficient number, since it is larger than the sum of its proper divisors (128842788831987).

212231123312013 is a wasteful number, since it uses less digits than its factorization.

212231123312013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4413482458 (or 4413482452 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 27.

Adding to 212231123312013 its reverse (310213321132212), we get a palindrome (522444444444225).

The spelling of 212231123312013 in words is "two hundred twelve trillion, two hundred thirty-one billion, one hundred twenty-three million, three hundred twelve thousand, thirteen".