123132012111 has 16 divisors (see below), whose sum is σ = 182454676320. Its totient is φ = 82071411840.

The previous prime is 123132012097. The next prime is 123132012127. The reversal of 123132012111 is 111210231321.

123132012111 is a `hidden beast` number, since 1 + 231 + 320 + 1 + 2 + 111 = 666.

It is not a de Polignac number, because 123132012111 - 2⁷ = 123132011983 is a prime.

It is a super-2 number, since 2×123132012111² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123132012191) 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, 324250 + ... + 592791.

It is an arithmetic number, because the mean of its divisors is an integer number (11403417270).

Almost surely, 2^123132012111 is an apocalyptic number.

123132012111 is a deficient number, since it is larger than the sum of its proper divisors (59322664209).

123132012111 is an equidigital number, since it uses as much as digits as its factorization.

123132012111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 922023 (or 922017 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 18.

Adding to 123132012111 its reverse (111210231321), we get a palindrome (234342243432).

The spelling of 123132012111 in words is "one hundred twenty-three billion, one hundred thirty-two million, twelve thousand, one hundred eleven".