13120404012 has 72 divisors (see below), whose sum is σ = 33340834800. Its totient is φ = 4350412800.

The previous prime is 13120403993. The next prime is 13120404049. The reversal of 13120404012 is 21040402131.

It is a super-2 number, since 2×13120404012² (a number of 21 digits) contains 22 as substring.

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

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6249739 + ... + 6251837.

It is an arithmetic number, because the mean of its divisors is an integer number (463067150).

Almost surely, 2^13120404012 is an apocalyptic number.

13120404012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

13120404012 is an abundant number, since it is smaller than the sum of its proper divisors (20220430788).

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

13120404012 is a wasteful number, since it uses less digits than its factorization.

13120404012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2943 (or 2938 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

Adding to 13120404012 its reverse (21040402131), we get a palindrome (34160806143).

The spelling of 13120404012 in words is "thirteen billion, one hundred twenty million, four hundred four thousand, twelve".