100202102221 has 32 divisors (see below), whose sum is σ = 111126863232. Its totient is φ = 89766593280.

The previous prime is 100202102183. The next prime is 100202102227. The reversal of 100202102221 is 122201202001.

It is a happy number.

It is not a de Polignac number, because 100202102221 - 2¹⁹ = 100201577933 is a prime.

It is a super-2 number, since 2×100202102221² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (13).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100202102227) 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, 72556951 + ... + 72558331.

It is an arithmetic number, because the mean of its divisors is an integer number (3472714476).

Almost surely, 2^100202102221 is an apocalyptic number.

It is an amenable number.

100202102221 is a deficient number, since it is larger than the sum of its proper divisors (10924761011).

100202102221 is a wasteful number, since it uses less digits than its factorization.

100202102221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2173.

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 100202102221 its reverse (122201202001), we get a palindrome (222403304222).

The spelling of 100202102221 in words is "one hundred billion, two hundred two million, one hundred two thousand, two hundred twenty-one".