13110111220 has 48 divisors (see below), whose sum is σ = 27743119488. Its totient is φ = 5203794560.

The previous prime is 13110111211. The next prime is 13110111241. The reversal of 13110111220 is 2211101131.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 13110111220.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2178015 + ... + 2184025.

It is an arithmetic number, because the mean of its divisors is an integer number (577981656).

Almost surely, 2^13110111220 is an apocalyptic number.

13110111220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13110111220 is an abundant number, since it is smaller than the sum of its proper divisors (14633008268).

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

13110111220 is a wasteful number, since it uses less digits than its factorization.

13110111220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6840 (or 6838 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 13.

Adding to 13110111220 its reverse (2211101131), we get a palindrome (15321212351).

The spelling of 13110111220 in words is "thirteen billion, one hundred ten million, one hundred eleven thousand, two hundred twenty".