13415111220 has 72 divisors (see below), whose sum is σ = 43694943264. Its totient is φ = 3066310464.

The previous prime is 13415111209. The next prime is 13415111251. The reversal of 13415111220 is 2211151431.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2278542 + ... + 2284421.

It is an arithmetic number, because the mean of its divisors is an integer number (606874212).

Almost surely, 2^13415111220 is an apocalyptic number.

13415111220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13415111220 is an abundant number, since it is smaller than the sum of its proper divisors (30279832044).

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

13415111220 is a wasteful number, since it uses less digits than its factorization.

13415111220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4562989 (or 4562980 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 21.

Adding to 13415111220 its reverse (2211151431), we get a palindrome (15626262651).

The spelling of 13415111220 in words is "thirteen billion, four hundred fifteen million, one hundred eleven thousand, two hundred twenty".