20200021022021 has 8 divisors (see below), whose sum is σ = 21263662747200. Its totient is φ = 19136427569280.

The previous prime is 20200021022009. The next prime is 20200021022081. The reversal of 20200021022021 is 12022012000202.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20200021022021 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20200021021987 and 20200021022005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20200021022081) 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, 11207585 + ... + 12884486.

It is an arithmetic number, because the mean of its divisors is an integer number (2657957843400).

Almost surely, 2^{20200021022021} is an apocalyptic number.

It is an amenable number.

20200021022021 is a deficient number, since it is larger than the sum of its proper divisors (1063641725179).

20200021022021 is a wasteful number, since it uses less digits than its factorization.

20200021022021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24136219.

The product of its (nonzero) digits is 64, while the sum is 14.

Adding to 20200021022021 its reverse (12022012000202), we get a palindrome (32222033022223).

The spelling of 20200021022021 in words is "twenty trillion, two hundred billion, twenty-one million, twenty-two thousand, twenty-one".