102131031332221 has 8 divisors (see below), whose sum is σ = 104323790545920. Its totient is φ = 99939095391408.

The previous prime is 102131031332207. The next prime is 102131031332237. The reversal of 102131031332221 is 122233130131201.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 102131031332221 - 2⁷ = 102131031332093 is a prime.

It is a super-2 number, since 2×102131031332221² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102131031339221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 205567446 + ... + 206063671.

It is an arithmetic number, because the mean of its divisors is an integer number (13040473818240).

Almost surely, 2^{102131031332221} is an apocalyptic number.

It is an amenable number.

102131031332221 is a deficient number, since it is larger than the sum of its proper divisors (2192759213699).

102131031332221 is an equidigital number, since it uses as much as digits as its factorization.

102131031332221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 411636443.

The product of its (nonzero) digits is 1296, while the sum is 25.

Adding to 102131031332221 its reverse (122233130131201), we get a palindrome (224364161463422).

The spelling of 102131031332221 in words is "one hundred two trillion, one hundred thirty-one billion, thirty-one million, three hundred thirty-two thousand, two hundred twenty-one".