20220200021 has 16 divisors (see below), whose sum is σ = 23438807040. Its totient is φ = 17084798640.

The previous prime is 20220200009. The next prime is 20220200023. The reversal of 20220200021 is 12000202202.

It is not a de Polignac number, because 20220200021 - 2⁶ = 20220199957 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 20220199975 and 20220200011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20220200023) 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, 319970 + ... + 377916.

It is an arithmetic number, because the mean of its divisors is an integer number (1464925440).

Almost surely, 2^20220200021 is an apocalyptic number.

It is an amenable number.

20220200021 is a deficient number, since it is larger than the sum of its proper divisors (3218607019).

20220200021 is an equidigital number, since it uses as much as digits as its factorization.

20220200021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58664.

The product of its (nonzero) digits is 32, while the sum is 11.

Adding to 20220200021 its reverse (12000202202), we get a palindrome (32220402223).

The spelling of 20220200021 in words is "twenty billion, two hundred twenty million, two hundred thousand, twenty-one".