123121311124 has 24 divisors (see below), whose sum is σ = 246252480320. Its totient is φ = 52764163776.

The previous prime is 123121311101. The next prime is 123121311151. The reversal of 123121311124 is 421113121321.

It is a super-2 number, since 2×123121311124² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 123121311095 and 123121311104.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 770944 + ... + 916840.

Almost surely, 2^123121311124 is an apocalyptic number.

123121311124 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

123121311124 is an abundant number, since it is smaller than the sum of its proper divisors (123131169196).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

123121311124 is a wasteful number, since it uses less digits than its factorization.

123121311124 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 176047 (or 176045 counting only the distinct ones).

The product of its digits is 288, while the sum is 22.

Adding to 123121311124 its reverse (421113121321), we get a palindrome (544234432445).

The spelling of 123121311124 in words is "one hundred twenty-three billion, one hundred twenty-one million, three hundred eleven thousand, one hundred twenty-four".