201122022112021 has 4 divisors (see below), whose sum is σ = 201122062902432. Its totient is φ = 201121981321612.

The previous prime is 201122022111971. The next prime is 201122022112049. The reversal of 201122022112021 is 120211220221102.

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 201122022112021 - 2²⁷ = 201121887894293 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 201122022112021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201122022172021) 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, 11788651 + ... + 23264056.

It is an arithmetic number, because the mean of its divisors is an integer number (50280515725608).

Almost surely, 2^{201122022112021} is an apocalyptic number.

It is an amenable number.

201122022112021 is a deficient number, since it is larger than the sum of its proper divisors (40790411).

201122022112021 is an equidigital number, since it uses as much as digits as its factorization.

201122022112021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40790410.

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 201122022112021 its reverse (120211220221102), we get a palindrome (321333242333123).

The spelling of 201122022112021 in words is "two hundred one trillion, one hundred twenty-two billion, twenty-two million, one hundred twelve thousand, twenty-one".