102110102020221 has 16 divisors (see below), whose sum is σ = 139828448989824. Its totient is φ = 66232630908864.

The previous prime is 102110102020193. The next prime is 102110102020231. The reversal of 102110102020221 is 122020201011201.

It is a de Polignac number, because none of the positive numbers 2^k-102110102020221 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 102110102020221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102110102020231) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1236655 + ... + 14343971.

It is an arithmetic number, because the mean of its divisors is an integer number (8739278061864).

Almost surely, 2^{102110102020221} is an apocalyptic number.

It is an amenable number.

102110102020221 is a deficient number, since it is larger than the sum of its proper divisors (37718346969603).

102110102020221 is a wasteful number, since it uses less digits than its factorization.

102110102020221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13177540.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 102110102020221 its reverse (122020201011201), we get a palindrome (224130303031422).

The spelling of 102110102020221 in words is "one hundred two trillion, one hundred ten billion, one hundred two million, twenty thousand, two hundred twenty-one".