102102310221 has 4 divisors (see below), whose sum is σ = 136136413632. Its totient is φ = 68068206812.

The previous prime is 102102310201. The next prime is 102102310223. The reversal of 102102310221 is 122013201201.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 102102310221 - 2³³ = 93512375629 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 102102310221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102102310223) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17017051701 + ... + 17017051706.

It is an arithmetic number, because the mean of its divisors is an integer number (34034103408).

Almost surely, 2^102102310221 is an apocalyptic number.

It is an amenable number.

102102310221 is a deficient number, since it is larger than the sum of its proper divisors (34034103411).

102102310221 is an equidigital number, since it uses as much as digits as its factorization.

102102310221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34034103410.

The product of its (nonzero) digits is 48, while the sum is 15.

Adding to 102102310221 its reverse (122013201201), we get a palindrome (224115511422).

The spelling of 102102310221 in words is "one hundred two billion, one hundred two million, three hundred ten thousand, two hundred twenty-one".