13012121312 has 12 divisors (see below), whose sum is σ = 25617613896. Its totient is φ = 6506060640.

The previous prime is 13012121303. The next prime is 13012121323. The reversal of 13012121312 is 21312121031.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 203314364 + ... + 203314427.

It is an arithmetic number, because the mean of its divisors is an integer number (2134801158).

Almost surely, 2^13012121312 is an apocalyptic number.

It is an amenable number.

13012121312 is a deficient number, since it is larger than the sum of its proper divisors (12605492584).

13012121312 is an equidigital number, since it uses as much as digits as its factorization.

13012121312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 406628801 (or 406628793 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 13012121312 its reverse (21312121031), we get a palindrome (34324242343).

The spelling of 13012121312 in words is "thirteen billion, twelve million, one hundred twenty-one thousand, three hundred twelve".