123101311123 has 16 divisors (see below), whose sum is σ = 144138548736. Its totient is φ = 102927620160.

The previous prime is 123101311079. The next prime is 123101311153. The reversal of 123101311123 is 321113101321.

It is not a de Polignac number, because 123101311123 - 2¹⁷ = 123101180051 is a prime.

It is a super-2 number, since 2×123101311123² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 123101311123.

It is not an unprimeable number, because it can be changed into a prime (123101311153) 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, 2391940 + ... + 2442862.

It is an arithmetic number, because the mean of its divisors is an integer number (9008659296).

Almost surely, 2^123101311123 is an apocalyptic number.

123101311123 is a deficient number, since it is larger than the sum of its proper divisors (21037237613).

123101311123 is an equidigital number, since it uses as much as digits as its factorization.

123101311123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59394.

The product of its (nonzero) digits is 108, while the sum is 19.

Adding to 123101311123 its reverse (321113101321), we get a palindrome (444214412444).

The spelling of 123101311123 in words is "one hundred twenty-three billion, one hundred one million, three hundred eleven thousand, one hundred twenty-three".