231342022121 has 4 divisors (see below), whose sum is σ = 264390882432. Its totient is φ = 198293161812.

The previous prime is 231342022099. The next prime is 231342022141. The reversal of 231342022121 is 121220243132.

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 231342022121 - 2⁶ = 231342022057 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (231342022141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16524430145 + ... + 16524430158.

It is an arithmetic number, because the mean of its divisors is an integer number (66097720608).

Almost surely, 2^231342022121 is an apocalyptic number.

It is an amenable number.

231342022121 is a deficient number, since it is larger than the sum of its proper divisors (33048860311).

231342022121 is an equidigital number, since it uses as much as digits as its factorization.

231342022121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33048860310.

The product of its (nonzero) digits is 1152, while the sum is 23.

Adding to 231342022121 its reverse (121220243132), we get a palindrome (352562265253).

The spelling of 231342022121 in words is "two hundred thirty-one billion, three hundred forty-two million, twenty-two thousand, one hundred twenty-one".