122123231 has 4 divisors (see below), whose sum is σ = 122943000. Its totient is φ = 121303464.

The previous prime is 122123227. The next prime is 122123237. The reversal of 122123231 is 132321221.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 132321221 = 2803 ⋅47207.

It is a cyclic number.

It is not a de Polignac number, because 122123231 - 2² = 122123227 is a prime.

It is a super-2 number, since 2×122123231² = 29828167099758722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122123237) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 409661 + ... + 409958.

It is an arithmetic number, because the mean of its divisors is an integer number (30735750).

Almost surely, 2^122123231 is an apocalyptic number.

122123231 is a deficient number, since it is larger than the sum of its proper divisors (819769).

122123231 is an equidigital number, since it uses as much as digits as its factorization.

122123231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 819768.

The product of its digits is 144, while the sum is 17.

The square root of 122123231 is about 11050.9380144855. The cubic root of 122123231 is about 496.1345008440.

Adding to 122123231 its reverse (132321221), we get a palindrome (254444452).

The spelling of 122123231 in words is "one hundred twenty-two million, one hundred twenty-three thousand, two hundred thirty-one".