13121333287 has 2 divisors, whose sum is σ = 13121333288. Its totient is φ = 13121333286.

The previous prime is 13121333237. The next prime is 13121333293. The reversal of 13121333287 is 78233312131.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13121333287 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13121333207) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6560666643 + 6560666644.

It is an arithmetic number, because the mean of its divisors is an integer number (6560666644).

Almost surely, 2^13121333287 is an apocalyptic number.

13121333287 is a deficient number, since it is larger than the sum of its proper divisors (1).

13121333287 is an equidigital number, since it uses as much as digits as its factorization.

13121333287 is an evil number, because the sum of its binary digits is even.

The product of its digits is 18144, while the sum is 34.

The spelling of 13121333287 in words is "thirteen billion, one hundred twenty-one million, three hundred thirty-three thousand, two hundred eighty-seven".