102131111210201 has 4 divisors (see below), whose sum is σ = 102222544614372. Its totient is φ = 102039677806032.

The previous prime is 102131111210173. The next prime is 102131111210209. The reversal of 102131111210201 is 102012111131201.

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

It can be written as a sum of positive squares in 2 ways, for example, as 29402638656400 + 72728472553801 = 5422420^2 + 8528099^2 .

It is a cyclic number.

It is not a de Polignac number, because 102131111210201 - 2³⁰ = 102130037468377 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 102131111210201.

It is not an unprimeable number, because it can be changed into a prime (102131111210209) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 45716700410 + ... + 45716702643.

It is an arithmetic number, because the mean of its divisors is an integer number (25555636153593).

Almost surely, 2^{102131111210201} is an apocalyptic number.

It is an amenable number.

102131111210201 is a deficient number, since it is larger than the sum of its proper divisors (91433404171).

102131111210201 is an equidigital number, since it uses as much as digits as its factorization.

102131111210201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 91433404170.

The product of its (nonzero) digits is 24, while the sum is 17.

Adding to 102131111210201 its reverse (102012111131201), we get a palindrome (204143222341402).

The spelling of 102131111210201 in words is "one hundred two trillion, one hundred thirty-one billion, one hundred eleven million, two hundred ten thousand, two hundred one".