100022020021 has 16 divisors (see below), whose sum is σ = 124789938048. Its totient is φ = 77884761600.

The previous prime is 100022020003. The next prime is 100022020051. The reversal of 100022020021 is 120020220001.

It is a cyclic number.

It is not a de Polignac number, because 100022020021 - 2⁵ = 100022019989 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 (100022020051) 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, 342900 + ... + 563581.

It is an arithmetic number, because the mean of its divisors is an integer number (7799371128).

Almost surely, 2^100022020021 is an apocalyptic number.

100022020021 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

100022020021 is a deficient number, since it is larger than the sum of its proper divisors (24767918027).

100022020021 is a wasteful number, since it uses less digits than its factorization.

100022020021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 907932.

The product of its (nonzero) digits is 16, while the sum is 10.

Adding to 100022020021 its reverse (120020220001), we get a palindrome (220042240022).

The spelling of 100022020021 in words is "one hundred billion, twenty-two million, twenty thousand, twenty-one".