113001220 has 24 divisors (see below), whose sum is σ = 237613824. Its totient is φ = 45141216.

The previous prime is 113001211. The next prime is 113001223. The reversal of 113001220 is 22100311.

It is a Harshad number since it is a multiple of its sum of digits (10).

It is a junction number, because it is equal to n+sod(n) for n = 113001197 and 113001206.

It is not an unprimeable number, because it can be changed into a prime (113001223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13987 + ... + 20533.

It is an arithmetic number, because the mean of its divisors is an integer number (9900576).

Almost surely, 2^113001220 is an apocalyptic number.

113001220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

113001220 is an abundant number, since it is smaller than the sum of its proper divisors (124612604).

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

113001220 is a wasteful number, since it uses less digits than its factorization.

113001220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7419 (or 7417 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 10.

The square root of 113001220 is about 10630.2031965527. The cubic root of 113001220 is about 483.4605525862.

Adding to 113001220 its reverse (22100311), we get a palindrome (135101531).

Subtracting from 113001220 its reverse (22100311), we obtain a palindrome (90900909).

The spelling of 113001220 in words is "one hundred thirteen million, one thousand, two hundred twenty".