12002113123 has 64 divisors (see below), whose sum is σ = 16528232448. Its totient is φ = 8413009920.

The previous prime is 12002113099. The next prime is 12002113127. The reversal of 12002113123 is 32131120021.

It is not a de Polignac number, because 12002113123 - 2⁵ = 12002113091 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12002113097 and 12002113106.

It is not an unprimeable number, because it can be changed into a prime (12002113127) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 15854461 + ... + 15855217.

It is an arithmetic number, because the mean of its divisors is an integer number (258253632).

Almost surely, 2^12002113123 is an apocalyptic number.

12002113123 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

12002113123 is a deficient number, since it is larger than the sum of its proper divisors (4526119325).

12002113123 is a wasteful number, since it uses less digits than its factorization.

12002113123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1172.

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 12002113123 its reverse (32131120021), we get a palindrome (44133233144).

The spelling of 12002113123 in words is "twelve billion, two million, one hundred thirteen thousand, one hundred twenty-three".