13111334220 has 24 divisors (see below), whose sum is σ = 36711735984. Its totient is φ = 3496355776.

The previous prime is 13111334219. The next prime is 13111334227. The reversal of 13111334220 is 2243311131.

It is not an unprimeable number, because it can be changed into a prime (13111334227) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 109261059 + ... + 109261178.

It is an arithmetic number, because the mean of its divisors is an integer number (1529655666).

Almost surely, 2^13111334220 is an apocalyptic number.

13111334220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13111334220 is an abundant number, since it is smaller than the sum of its proper divisors (23600401764).

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

13111334220 is a wasteful number, since it uses less digits than its factorization.

13111334220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 218522249 (or 218522247 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 21.

Adding to 13111334220 its reverse (2243311131), we get a palindrome (15354645351).

The spelling of 13111334220 in words is "thirteen billion, one hundred eleven million, three hundred thirty-four thousand, two hundred twenty".