123211121013 has 48 divisors (see below), whose sum is σ = 184204500480. Its totient is φ = 79307424000.

The previous prime is 123211120999. The next prime is 123211121027. The reversal of 123211121013 is 310121112321.

It is an interprime number because it is at equal distance from previous prime (123211120999) and next prime (123211121027).

It is not a de Polignac number, because 123211121013 - 2⁸ = 123211120757 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123211125013) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 52406788 + ... + 52409138.

It is an arithmetic number, because the mean of its divisors is an integer number (3837593760).

Almost surely, 2^123211121013 is an apocalyptic number.

It is an amenable number.

123211121013 is a deficient number, since it is larger than the sum of its proper divisors (60993379467).

123211121013 is a wasteful number, since it uses less digits than its factorization.

123211121013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3810 (or 3807 counting only the distinct ones).

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

Adding to 123211121013 its reverse (310121112321), we get a palindrome (433332233334).

The spelling of 123211121013 in words is "one hundred twenty-three billion, two hundred eleven million, one hundred twenty-one thousand, thirteen".