13121321302 has 16 divisors (see below), whose sum is σ = 20722521600. Its totient is φ = 6213969000.

The previous prime is 13121321287. The next prime is 13121321329. The reversal of 13121321302 is 20312312131.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a self number, because there is not a number n which added to its sum of digits gives 13121321302.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 144199 + ... + 216877.

It is an arithmetic number, because the mean of its divisors is an integer number (1295157600).

Almost surely, 2^13121321302 is an apocalyptic number.

13121321302 is a deficient number, since it is larger than the sum of its proper divisors (7601200298).

13121321302 is a wasteful number, since it uses less digits than its factorization.

13121321302 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77451.

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 13121321302 its reverse (20312312131), we get a palindrome (33433633433).

The spelling of 13121321302 in words is "thirteen billion, one hundred twenty-one million, three hundred twenty-one thousand, three hundred two".