123313111121 has 16 divisors (see below), whose sum is σ = 124826558976. Its totient is φ = 121811214336.

The previous prime is 123313111093. The next prime is 123313111127. The reversal of 123313111121 is 121111313321.

It is a cyclic number.

It is not a de Polignac number, because 123313111121 - 2¹⁰ = 123313110097 is a prime.

It is a super-2 number, since 2×123313111121² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 123313111093 and 123313111102.

It is not an unprimeable number, because it can be changed into a prime (123313111127) 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, 19610840 + ... + 19617126.

It is an arithmetic number, because the mean of its divisors is an integer number (7801659936).

Almost surely, 2^123313111121 is an apocalyptic number.

It is an amenable number.

123313111121 is a deficient number, since it is larger than the sum of its proper divisors (1513447855).

123313111121 is a wasteful number, since it uses less digits than its factorization.

123313111121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7168.

The product of its digits is 108, while the sum is 20.

Adding to 123313111121 its reverse (121111313321), we get a palindrome (244424424442).

The spelling of 123313111121 in words is "one hundred twenty-three billion, three hundred thirteen million, one hundred eleven thousand, one hundred twenty-one".