122431121 has 4 divisors (see below), whose sum is σ = 126380544. Its totient is φ = 118481700.

The previous prime is 122431063. The next prime is 122431129. The reversal of 122431121 is 121134221.

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, and also an emirpimes, since its reverse is a distinct semiprime: 121134221 = 13 ⋅9318017.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-122431121 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 122431121.

It is not an unprimeable number, because it can be changed into a prime (122431129) 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, 1974665 + ... + 1974726.

It is an arithmetic number, because the mean of its divisors is an integer number (31595136).

Almost surely, 2^122431121 is an apocalyptic number.

It is an amenable number.

122431121 is a deficient number, since it is larger than the sum of its proper divisors (3949423).

122431121 is an equidigital number, since it uses as much as digits as its factorization.

122431121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3949422.

The product of its digits is 96, while the sum is 17.

The square root of 122431121 is about 11064.8597370233. The cubic root of 122431121 is about 496.5510927774.

Adding to 122431121 its reverse (121134221), we get a palindrome (243565342).

The spelling of 122431121 in words is "one hundred twenty-two million, four hundred thirty-one thousand, one hundred twenty-one".