113102001220 has 24 divisors (see below), whose sum is σ = 255784526424. Its totient is φ = 41760738816.

The previous prime is 113102001217. The next prime is 113102001223. The reversal of 113102001220 is 22100201311.

113102001220 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (113102001217) and next prime (113102001223).

It can be written as a sum of positive squares in 4 ways, for example, as 1408350784 + 111693650436 = 37528^2 + 334206^2 .

It is a Harshad number since it is a multiple of its sum of digits (13).

It is a self number, because there is not a number n which added to its sum of digits gives 113102001220.

It is not an unprimeable number, because it can be changed into a prime (113102001223) by changing a digit.

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, 217503589 + ... + 217504108.

It is an arithmetic number, because the mean of its divisors is an integer number (10657688601).

Almost surely, 2^113102001220 is an apocalyptic number.

113102001220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

113102001220 is an abundant number, since it is smaller than the sum of its proper divisors (142682525204).

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

113102001220 is a wasteful number, since it uses less digits than its factorization.

113102001220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 435007719 (or 435007717 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 13.

Adding to 113102001220 its reverse (22100201311), we get a palindrome (135202202531).

The spelling of 113102001220 in words is "one hundred thirteen billion, one hundred two million, one thousand, two hundred twenty".