12313012001220 has 144 divisors (see below), whose sum is σ = 42908591351808. Its totient is φ = 2799667595520.

The previous prime is 12313012001209. The next prime is 12313012001261. The reversal of 12313012001220 is 2210021031321.

12313012001220 is a `hidden beast` number, since 12 + 31 + 301 + 200 + 122 + 0 = 666.

12313012001220 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×12313012001220² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 12313012001193 and 12313012001202.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 25341099 + ... + 25822418.

It is an arithmetic number, because the mean of its divisors is an integer number (297976328832).

Almost surely, 2^{12313012001220} is an apocalyptic number.

12313012001220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12313012001220 is an abundant number, since it is smaller than the sum of its proper divisors (30595579350588).

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

12313012001220 is a wasteful number, since it uses less digits than its factorization.

12313012001220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51163730 (or 51163725 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 12313012001220 its reverse (2210021031321), we get a palindrome (14523033032541).

The spelling of 12313012001220 in words is "twelve trillion, three hundred thirteen billion, twelve million, one thousand, two hundred twenty".