13011012020 has 12 divisors (see below), whose sum is σ = 27323125284. Its totient is φ = 5204404800.

The previous prime is 13011011963. The next prime is 13011012031. The reversal of 13011012020 is 2021011031.

It can be written as a sum of positive squares in 2 ways, for example, as 9924542884 + 3086469136 = 99622^2 + 55556^2 .

It is a junction number, because it is equal to n+sod(n) for n = 13011011992 and 13011012010.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 325275281 + ... + 325275320.

It is an arithmetic number, because the mean of its divisors is an integer number (2276927107).

Almost surely, 2^13011012020 is an apocalyptic number.

13011012020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13011012020 is an abundant number, since it is smaller than the sum of its proper divisors (14312113264).

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

13011012020 is a wasteful number, since it uses less digits than its factorization.

13011012020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 650550610 (or 650550608 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 11.

Adding to 13011012020 its reverse (2021011031), we get a palindrome (15032023051).

The spelling of 13011012020 in words is "thirteen billion, eleven million, twelve thousand, twenty".