100202222121 has 16 divisors (see below), whose sum is σ = 134063899200. Its totient is φ = 66571098048.

The previous prime is 100202222093. The next prime is 100202222147. The reversal of 100202222121 is 121222202001.

It is not a de Polignac number, because 100202222121 - 2⁵ = 100202222089 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 100202222121.

It is not an unprimeable number, because it can be changed into a prime (100202222321) 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, 9046975 + ... + 9058043.

It is an arithmetic number, because the mean of its divisors is an integer number (8378993700).

Almost surely, 2^100202222121 is an apocalyptic number.

It is an amenable number.

100202222121 is a deficient number, since it is larger than the sum of its proper divisors (33861677079).

100202222121 is a wasteful number, since it uses less digits than its factorization.

100202222121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21208.

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 100202222121 its reverse (121222202001), we get a palindrome (221424424122).

The spelling of 100202222121 in words is "one hundred billion, two hundred two million, two hundred twenty-two thousand, one hundred twenty-one".