13201021087 has 2 divisors, whose sum is σ = 13201021088. Its totient is φ = 13201021086.

The previous prime is 13201021073. The next prime is 13201021117. The reversal of 13201021087 is 78012010231.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 13201021087 - 2¹⁵ = 13200988319 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13201621087) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6600510543 + 6600510544.

It is an arithmetic number, because the mean of its divisors is an integer number (6600510544).

Almost surely, 2^13201021087 is an apocalyptic number.

13201021087 is a deficient number, since it is larger than the sum of its proper divisors (1).

13201021087 is an equidigital number, since it uses as much as digits as its factorization.

13201021087 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 672, while the sum is 25.

The spelling of 13201021087 in words is "thirteen billion, two hundred one million, twenty-one thousand, eighty-seven".