13201021312 has 16 divisors (see below), whose sum is σ = 26298909900. Its totient is φ = 6600510592.

The previous prime is 13201021303. The next prime is 13201021313. The reversal of 13201021312 is 21312010231.

It is a tau number, because it is divible by the number of its divisors (16).

It is a Harshad number since it is a multiple of its sum of digits (16).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13201021313) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51566362 + ... + 51566617.

Almost surely, 2^13201021312 is an apocalyptic number.

It is an amenable number.

13201021312 is a deficient number, since it is larger than the sum of its proper divisors (13097888588).

13201021312 is an equidigital number, since it uses as much as digits as its factorization.

13201021312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 103132993 (or 103132981 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 13201021312 its reverse (21312010231), we get a palindrome (34513031543).

The spelling of 13201021312 in words is "thirteen billion, two hundred one million, twenty-one thousand, three hundred twelve".