13121011012 has 12 divisors (see below), whose sum is σ = 23285174976. Its totient is φ = 6468103880.

The previous prime is 13121010983. The next prime is 13121011031. The reversal of 13121011012 is 21011012131.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 13121010983 and 13121011001.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23100088 + ... + 23100655.

It is an arithmetic number, because the mean of its divisors is an integer number (1940431248).

Almost surely, 2^13121011012 is an apocalyptic number.

It is an amenable number.

13121011012 is a deficient number, since it is larger than the sum of its proper divisors (10164163964).

13121011012 is a wasteful number, since it uses less digits than its factorization.

13121011012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46200818 (or 46200816 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 13.

Adding to 13121011012 its reverse (21011012131), we get a palindrome (34132023143).

It can be divided in two parts, 131 and 21011012, that multiplied together give a palindrome (2752442572).

The spelling of 13121011012 in words is "thirteen billion, one hundred twenty-one million, eleven thousand, twelve".