12120443013 has 16 divisors (see below), whose sum is σ = 18485816960. Its totient is φ = 6919753536.

The previous prime is 12120443011. The next prime is 12120443033. The reversal of 12120443013 is 31034402121.

It is not a de Polignac number, because 12120443013 - 2¹ = 12120443011 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12120443011) 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, 234898 + ... + 281811.

It is an arithmetic number, because the mean of its divisors is an integer number (1155363560).

Almost surely, 2^12120443013 is an apocalyptic number.

It is an amenable number.

12120443013 is a deficient number, since it is larger than the sum of its proper divisors (6365373947).

12120443013 is a wasteful number, since it uses less digits than its factorization.

12120443013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 517836.

The product of its (nonzero) digits is 576, while the sum is 21.

Adding to 12120443013 its reverse (31034402121), we get a palindrome (43154845134).

The spelling of 12120443013 in words is "twelve billion, one hundred twenty million, four hundred forty-three thousand, thirteen".