12020013013 has 4 divisors (see below), whose sum is σ = 12727072620. Its totient is φ = 11312953408.

The previous prime is 12020013011. The next prime is 12020013037. The reversal of 12020013013 is 31031002021.

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

It can be written as a sum of positive squares in 2 ways, for example, as 4272844689 + 7747168324 = 65367^2 + 88018^2 .

It is a cyclic number.

It is not a de Polignac number, because 12020013013 - 2¹ = 12020013011 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12020012984 and 12020013002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12020013011) 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, 353529778 + ... + 353529811.

It is an arithmetic number, because the mean of its divisors is an integer number (3181768155).

Almost surely, 2^12020013013 is an apocalyptic number.

It is an amenable number.

12020013013 is a deficient number, since it is larger than the sum of its proper divisors (707059607).

12020013013 is an equidigital number, since it uses as much as digits as its factorization.

12020013013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 707059606.

The product of its (nonzero) digits is 36, while the sum is 13.

Adding to 12020013013 its reverse (31031002021), we get a palindrome (43051015034).

The spelling of 12020013013 in words is "twelve billion, twenty million, thirteen thousand, thirteen".