123312232111 has 16 divisors (see below), whose sum is σ = 127302709248. Its totient is φ = 119381371200.

The previous prime is 123312232091. The next prime is 123312232123. The reversal of 123312232111 is 111232213321.

It is a cyclic number.

It is not a de Polignac number, because 123312232111 - 2⁷ = 123312231983 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 (123312232151) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4396171 + ... + 4424131.

It is an arithmetic number, because the mean of its divisors is an integer number (7956419328).

Almost surely, 2^123312232111 is an apocalyptic number.

123312232111 is a deficient number, since it is larger than the sum of its proper divisors (3990477137).

123312232111 is a wasteful number, since it uses less digits than its factorization.

123312232111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29022.

The product of its digits is 432, while the sum is 22.

Adding to 123312232111 its reverse (111232213321), we get a palindrome (234544445432).

The spelling of 123312232111 in words is "one hundred twenty-three billion, three hundred twelve million, two hundred thirty-two thousand, one hundred eleven".