102221371273721 has 32 divisors (see below), whose sum is σ = 118650618132480. Its totient is φ = 86250514939776.

The previous prime is 102221371273711. The next prime is 102221371273811. The reversal of 102221371273721 is 127372173122201.

It is a cyclic number.

It is not a de Polignac number, because 102221371273721 - 2²² = 102221367079417 is a prime.

It is not an unprimeable number, because it can be changed into a prime (102221371273711) 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, 5212972565 + ... + 5212992173.

It is an arithmetic number, because the mean of its divisors is an integer number (3707831816640).

Almost surely, 2^{102221371273721} is an apocalyptic number.

It is an amenable number.

102221371273721 is a deficient number, since it is larger than the sum of its proper divisors (16429246858759).

102221371273721 is a wasteful number, since it uses less digits than its factorization.

102221371273721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26853.

The product of its (nonzero) digits is 98784, while the sum is 41.

The spelling of 102221371273721 in words is "one hundred two trillion, two hundred twenty-one billion, three hundred seventy-one million, two hundred seventy-three thousand, seven hundred twenty-one".