12020000013 has 24 divisors (see below), whose sum is σ = 19851431808. Its totient is φ = 6865493472.

The previous prime is 12019999933. The next prime is 12020000017. The reversal of 12020000013 is 31000002021.

It is a happy number.

It is not a de Polignac number, because 12020000013 - 2⁸ = 12019999757 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12020000017) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 102856 + ... + 186062.

It is an arithmetic number, because the mean of its divisors is an integer number (827142992).

Almost surely, 2^12020000013 is an apocalyptic number.

It is an amenable number.

12020000013 is a deficient number, since it is larger than the sum of its proper divisors (7831431795).

12020000013 is a wasteful number, since it uses less digits than its factorization.

12020000013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85513 (or 85510 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 9.

Adding to 12020000013 its reverse (31000002021), we get a palindrome (43020002034).

The spelling of 12020000013 in words is "twelve billion, twenty million, thirteen", and thus it is an aban number and an uban number.