113311001220 has 24 divisors (see below), whose sum is σ = 317270803584. Its totient is φ = 30216266976.

The previous prime is 113311001189. The next prime is 113311001231. The reversal of 113311001220 is 22100113311.

It is a happy number.

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 113311001220.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 944258284 + ... + 944258403.

It is an arithmetic number, because the mean of its divisors is an integer number (13219616816).

Almost surely, 2^113311001220 is an apocalyptic number.

113311001220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

113311001220 is an abundant number, since it is smaller than the sum of its proper divisors (203959802364).

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

113311001220 is a wasteful number, since it uses less digits than its factorization.

113311001220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1888516699 (or 1888516697 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 15.

Adding to 113311001220 its reverse (22100113311), we get a palindrome (135411114531).

The spelling of 113311001220 in words is "one hundred thirteen billion, three hundred eleven million, one thousand, two hundred twenty".