113220100 has 36 divisors (see below), whose sum is σ = 280787584. Its totient is φ = 38818080.

The previous prime is 113220077. The next prime is 113220101. The reversal of 113220100 is 1022311.

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

It is not an unprimeable number, because it can be changed into a prime (113220101) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 80172 + ... + 81571.

Almost surely, 2^113220100 is an apocalyptic number.

113220100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

113220100 is an abundant number, since it is smaller than the sum of its proper divisors (167567484).

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

113220100 is a wasteful number, since it uses less digits than its factorization.

113220100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 161764 (or 161757 counting only the distinct ones).

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

The square root of 113220100 is about 10640.4934096122. The cubic root of 113220100 is about 483.7725008285.

Adding to 113220100 its reverse (1022311), we get a palindrome (114242411).

The spelling of 113220100 in words is "one hundred thirteen million, two hundred twenty thousand, one hundred".