100023222121 has 4 divisors (see below), whose sum is σ = 100188005632. Its totient is φ = 99858438612.

The previous prime is 100023222113. The next prime is 100023222139. The reversal of 100023222121 is 121222320001.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 100023222121 - 2³ = 100023222113 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 100023222095 and 100023222104.

It is not an unprimeable number, because it can be changed into a prime (100023222721) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 82390845 + ... + 82392058.

It is an arithmetic number, because the mean of its divisors is an integer number (25047001408).

Almost surely, 2^100023222121 is an apocalyptic number.

It is an amenable number.

100023222121 is a deficient number, since it is larger than the sum of its proper divisors (164783511).

100023222121 is an equidigital number, since it uses as much as digits as its factorization.

100023222121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 164783510.

The product of its (nonzero) digits is 96, while the sum is 16.

Adding to 100023222121 its reverse (121222320001), we get a palindrome (221245542122).

The spelling of 100023222121 in words is "one hundred billion, twenty-three million, two hundred twenty-two thousand, one hundred twenty-one".