202011122201021 has 4 divisors (see below), whose sum is σ = 230869853944032. Its totient is φ = 173152390458012.

The previous prime is 202011122201017. The next prime is 202011122201089. The reversal of 202011122201021 is 120102221110202.

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 not a de Polignac number, because 202011122201021 - 2² = 202011122201017 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (202011122221021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14429365871495 + ... + 14429365871508.

It is an arithmetic number, because the mean of its divisors is an integer number (57717463486008).

Almost surely, 2^{202011122201021} is an apocalyptic number.

It is an amenable number.

202011122201021 is a deficient number, since it is larger than the sum of its proper divisors (28858731743011).

202011122201021 is an equidigital number, since it uses as much as digits as its factorization.

202011122201021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28858731743010.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 202011122201021 its reverse (120102221110202), we get a palindrome (322113343311223).

The spelling of 202011122201021 in words is "two hundred two trillion, eleven billion, one hundred twenty-two million, two hundred one thousand, twenty-one".