1212312131020 has 24 divisors (see below), whose sum is σ = 2547785671200. Its totient is φ = 484557196032.

The previous prime is 1212312130943. The next prime is 1212312131099. The reversal of 1212312131020 is 201312132121.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22951485 + ... + 23004244.

It is an arithmetic number, because the mean of its divisors is an integer number (106157736300).

Almost surely, 2^{1212312131020} is an apocalyptic number.

1212312131020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1212312131020 is an abundant number, since it is smaller than the sum of its proper divisors (1335473540180).

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

1212312131020 is a wasteful number, since it uses less digits than its factorization.

1212312131020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45957057 (or 45957055 counting only the distinct ones).

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

Adding to 1212312131020 its reverse (201312132121), we get a palindrome (1413624263141).

The spelling of 1212312131020 in words is "one trillion, two hundred twelve billion, three hundred twelve million, one hundred thirty-one thousand, twenty".