12044020123 has 4 divisors (see below), whose sum is σ = 12045194928. Its totient is φ = 12042845320.

The previous prime is 12044020117. The next prime is 12044020147. The reversal of 12044020123 is 32102044021.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 12044020123 - 2⁵ = 12044020091 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12044020123.

It is not an unprimeable number, because it can be changed into a prime (12044020193) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 571888 + ... + 592573.

It is an arithmetic number, because the mean of its divisors is an integer number (3011298732).

Almost surely, 2^12044020123 is an apocalyptic number.

12044020123 is a deficient number, since it is larger than the sum of its proper divisors (1174805).

12044020123 is a wasteful number, since it uses less digits than its factorization.

12044020123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1174804.

The product of its (nonzero) digits is 384, while the sum is 19.

Adding to 12044020123 its reverse (32102044021), we get a palindrome (44146064144).

The spelling of 12044020123 in words is "twelve billion, forty-four million, twenty thousand, one hundred twenty-three".