12013123104 has 72 divisors (see below), whose sum is σ = 34741390320. Its totient is φ = 3936498048.

The previous prime is 12013123093. The next prime is 12013123139. The reversal of 12013123104 is 40132131021.

It is a tau number, because it is divible by the number of its divisors (72).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 336502 + ... + 370485.

It is an arithmetic number, because the mean of its divisors is an integer number (482519310).

Almost surely, 2^12013123104 is an apocalyptic number.

It is an amenable number.

12013123104 is an abundant number, since it is smaller than the sum of its proper divisors (22728267216).

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

12013123104 is a wasteful number, since it uses less digits than its factorization.

12013123104 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 707062 (or 707051 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 12013123104 its reverse (40132131021), we get a palindrome (52145254125).

The spelling of 12013123104 in words is "twelve billion, thirteen million, one hundred twenty-three thousand, one hundred four".