200020022121021 has 4 divisors (see below), whose sum is σ = 266693362828032. Its totient is φ = 133346681414012.

The previous prime is 200020022121013. The next prime is 200020022121097. The reversal of 200020022121021 is 120121220020002.

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 200020022121021 - 2³ = 200020022121013 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (200020022120021) 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, 33336670353501 + ... + 33336670353506.

It is an arithmetic number, because the mean of its divisors is an integer number (66673340707008).

Almost surely, 2^{200020022121021} is an apocalyptic number.

It is an amenable number.

200020022121021 is a deficient number, since it is larger than the sum of its proper divisors (66673340707011).

200020022121021 is an equidigital number, since it uses as much as digits as its factorization.

200020022121021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66673340707010.

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 200020022121021 its reverse (120121220020002), we get a palindrome (320141242141023).

The spelling of 200020022121021 in words is "two hundred trillion, twenty billion, twenty-two million, one hundred twenty-one thousand, twenty-one".