13121333293 has 2 divisors, whose sum is σ = 13121333294. Its totient is φ = 13121333292.

The previous prime is 13121333287. The next prime is 13121333321. The reversal of 13121333293 is 39233312131.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7274895849 + 5846437444 = 85293^2 + 76462^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13121333293 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13121333233) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6560666646 + 6560666647.

It is an arithmetic number, because the mean of its divisors is an integer number (6560666647).

Almost surely, 2^13121333293 is an apocalyptic number.

It is an amenable number.

13121333293 is a deficient number, since it is larger than the sum of its proper divisors (1).

13121333293 is an equidigital number, since it uses as much as digits as its factorization.

13121333293 is an evil number, because the sum of its binary digits is even.

The product of its digits is 8748, while the sum is 31.

The spelling of 13121333293 in words is "thirteen billion, one hundred twenty-one million, three hundred thirty-three thousand, two hundred ninety-three".