13121311031002 has 4 divisors (see below), whose sum is σ = 19681966546506. Its totient is φ = 6560655515500.

The previous prime is 13121311030981. The next prime is 13121311031027. The reversal of 13121311031002 is 20013011312131.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 6962679638721 + 6158631392281 = 2638689^2 + 2481659^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3280327757749 + ... + 3280327757752.

Almost surely, 2^{13121311031002} is an apocalyptic number.

13121311031002 is a deficient number, since it is larger than the sum of its proper divisors (6560655515504).

13121311031002 is an equidigital number, since it uses as much as digits as its factorization.

13121311031002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6560655515503.

The product of its (nonzero) digits is 108, while the sum is 19.

Adding to 13121311031002 its reverse (20013011312131), we get a palindrome (33134322343133).

The spelling of 13121311031002 in words is "thirteen trillion, one hundred twenty-one billion, three hundred eleven million, thirty-one thousand, two".