13111340220 has 144 divisors (see below), whose sum is σ = 44882903520. Its totient is φ = 3068889600.

The previous prime is 13111340213. The next prime is 13111340237. The reversal of 13111340220 is 2204311131.

13111340220 is a `hidden beast` number, since 1 + 311 + 134 + 0 + 220 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 13111340193 and 13111340202.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 56751 + ... + 171590.

It is an arithmetic number, because the mean of its divisors is an integer number (311686830).

Almost surely, 2^13111340220 is an apocalyptic number.

13111340220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13111340220 is an abundant number, since it is smaller than the sum of its proper divisors (31771563300).

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

13111340220 is a wasteful number, since it uses less digits than its factorization.

13111340220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 228396 (or 228391 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 13111340220 its reverse (2204311131), we get a palindrome (15315651351).

The spelling of 13111340220 in words is "thirteen billion, one hundred eleven million, three hundred forty thousand, two hundred twenty".