113020221 has 32 divisors (see below), whose sum is σ = 160911360. Its totient is φ = 70447104.

The previous prime is 113020217. The next prime is 113020241. The reversal of 113020221 is 122020311.

It is not a de Polignac number, because 113020221 - 2² = 113020217 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 113020197 and 113020206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (113020241) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 585501 + ... + 585693.

It is an arithmetic number, because the mean of its divisors is an integer number (5028480).

Almost surely, 2^113020221 is an apocalyptic number.

It is an amenable number.

113020221 is a deficient number, since it is larger than the sum of its proper divisors (47891139).

113020221 is a wasteful number, since it uses less digits than its factorization.

113020221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 405.

The product of its (nonzero) digits is 24, while the sum is 12.

The square root of 113020221 is about 10631.0968860226. The cubic root of 113020221 is about 483.4876488102.

Adding to 113020221 its reverse (122020311), we get a palindrome (235040532).

The spelling of 113020221 in words is "one hundred thirteen million, twenty thousand, two hundred twenty-one".