20002022200021 has 8 divisors (see below), whose sum is σ = 20692930757400. Its totient is φ = 19311192552960.

The previous prime is 20002022200007. The next prime is 20002022200033. The reversal of 20002022200021 is 12000222020002.

It can be written as a sum of positive squares in 4 ways, for example, as 1033506058225 + 18968516141796 = 1016615^2 + 4355286^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20002022200021 - 2²³ = 20002013811413 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20002022199974 and 20002022200010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20002022200421) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19211640 + ... + 20226001.

It is an arithmetic number, because the mean of its divisors is an integer number (2586616344675).

Almost surely, 2^{20002022200021} is an apocalyptic number.

It is an amenable number.

20002022200021 is a deficient number, since it is larger than the sum of its proper divisors (690908557379).

20002022200021 is a wasteful number, since it uses less digits than its factorization.

20002022200021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39455159.

The product of its (nonzero) digits is 64, while the sum is 13.

Adding to 20002022200021 its reverse (12000222020002), we get a palindrome (32002244220023).

The spelling of 20002022200021 in words is "twenty trillion, two billion, twenty-two million, two hundred thousand, twenty-one".