102131202303221 has 32 divisors (see below), whose sum is σ = 126872685139200. Its totient is φ = 80053426690560.

The previous prime is 102131202303191. The next prime is 102131202303241. The reversal of 102131202303221 is 122303202131201.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-102131202303221 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102131202303241) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 63892310 + ... + 65471288.

It is an arithmetic number, because the mean of its divisors is an integer number (3964771410600).

Almost surely, 2^{102131202303221} is an apocalyptic number.

It is an amenable number.

102131202303221 is a deficient number, since it is larger than the sum of its proper divisors (24741482835979).

102131202303221 is a wasteful number, since it uses less digits than its factorization.

102131202303221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1585629.

The product of its (nonzero) digits is 864, while the sum is 23.

Adding to 102131202303221 its reverse (122303202131201), we get a palindrome (224434404434422).

The spelling of 102131202303221 in words is "one hundred two trillion, one hundred thirty-one billion, two hundred two million, three hundred three thousand, two hundred twenty-one".