102021232221221 has 16 divisors (see below), whose sum is σ = 108066118325760. Its totient is φ = 96044226833520.

The previous prime is 102021232221203. The next prime is 102021232221229. The reversal of 102021232221221 is 122122232120201.

It is a cyclic number.

It is not a de Polignac number, because 102021232221221 - 2¹⁰ = 102021232220197 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102021232221229) 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, 5816786 + ... + 15423276.

It is an arithmetic number, because the mean of its divisors is an integer number (6754132395360).

Almost surely, 2^{102021232221221} is an apocalyptic number.

It is an amenable number.

102021232221221 is a deficient number, since it is larger than the sum of its proper divisors (6044886104539).

102021232221221 is a wasteful number, since it uses less digits than its factorization.

102021232221221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9610024.

The product of its (nonzero) digits is 768, while the sum is 23.

Adding to 102021232221221 its reverse (122122232120201), we get a palindrome (224143464341422).

The spelling of 102021232221221 in words is "one hundred two trillion, twenty-one billion, two hundred thirty-two million, two hundred twenty-one thousand, two hundred twenty-one".