202310221431121 has 4 divisors (see below), whose sum is σ = 202804867449700. Its totient is φ = 201815575412544.

The previous prime is 202310221431119. The next prime is 202310221431133. The reversal of 202310221431121 is 121134122013202.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 98352621109521 + 103957600321600 = 9917289^2 + 10195960^2 .

It is a cyclic number.

It is not a de Polignac number, because 202310221431121 - 2¹ = 202310221431119 is a prime.

It is a super-2 number, since 2×202310221431121² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (202310221431181) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 247323008676 + ... + 247323009493.

It is an arithmetic number, because the mean of its divisors is an integer number (50701216862425).

Almost surely, 2^{202310221431121} is an apocalyptic number.

It is an amenable number.

202310221431121 is a deficient number, since it is larger than the sum of its proper divisors (494646018579).

202310221431121 is an equidigital number, since it uses as much as digits as its factorization.

202310221431121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 494646018578.

The product of its (nonzero) digits is 1152, while the sum is 25.

Adding to 202310221431121 its reverse (121134122013202), we get a palindrome (323444343444323).

The spelling of 202310221431121 in words is "two hundred two trillion, three hundred ten billion, two hundred twenty-one million, four hundred thirty-one thousand, one hundred twenty-one".