13011122220 has 48 divisors (see below), whose sum is σ = 37606345728. Its totient is φ = 3357708480.

The previous prime is 13011122207. The next prime is 13011122263. The reversal of 13011122220 is 2222111031.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 13011122220.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3495754 + ... + 3499473.

It is an arithmetic number, because the mean of its divisors is an integer number (783465536).

Almost surely, 2^13011122220 is an apocalyptic number.

13011122220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13011122220 is an abundant number, since it is smaller than the sum of its proper divisors (24595223508).

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

13011122220 is a wasteful number, since it uses less digits than its factorization.

13011122220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6995270 (or 6995268 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 15.

Adding to 13011122220 its reverse (2222111031), we get a palindrome (15233233251).

The spelling of 13011122220 in words is "thirteen billion, eleven million, one hundred twenty-two thousand, two hundred twenty".