202210120121221 has 4 divisors (see below), whose sum is σ = 202216368341952. Its totient is φ = 202203871900492.

The previous prime is 202210120121197. The next prime is 202210120121227. The reversal of 202210120121221 is 122121021012202.

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 202210120121221 - 2⁵ = 202210120121189 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (202210120121227) 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, 3124061821 + ... + 3124126546.

It is an arithmetic number, because the mean of its divisors is an integer number (50554092085488).

Almost surely, 2^{202210120121221} is an apocalyptic number.

It is an amenable number.

202210120121221 is a deficient number, since it is larger than the sum of its proper divisors (6248220731).

202210120121221 is an equidigital number, since it uses as much as digits as its factorization.

202210120121221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6248220730.

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

Adding to 202210120121221 its reverse (122121021012202), we get a palindrome (324331141133423).

The spelling of 202210120121221 in words is "two hundred two trillion, two hundred ten billion, one hundred twenty million, one hundred twenty-one thousand, two hundred twenty-one".