123131132112212 has 36 divisors (see below), whose sum is σ = 256489102457280. Its totient is φ = 51543264601584.

The previous prime is 123131132112139. The next prime is 123131132112229. The reversal of 123131132112212 is 212211231131321.

It is a super-2 number, since 2×123131132112212² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7304876012 + ... + 7304892867.

It is an arithmetic number, because the mean of its divisors is an integer number (7124697290480).

Almost surely, 2^{123131132112212} is an apocalyptic number.

It is an amenable number.

123131132112212 is an abundant number, since it is smaller than the sum of its proper divisors (133357970345068).

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

123131132112212 is a wasteful number, since it uses less digits than its factorization.

123131132112212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14609768940 (or 14609768931 counting only the distinct ones).

The product of its digits is 864, while the sum is 26.

Adding to 123131132112212 its reverse (212211231131321), we get a palindrome (335342363243533).

The spelling of 123131132112212 in words is "one hundred twenty-three trillion, one hundred thirty-one billion, one hundred thirty-two million, one hundred twelve thousand, two hundred twelve".