113220505 has 16 divisors (see below), whose sum is σ = 141001344. Its totient is φ = 87212160.

The previous prime is 113220491. The next prime is 113220529. The reversal of 113220505 is 505022311.

It is not a de Polignac number, because 113220505 - 2⁷ = 113220377 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11557 + ... + 18973.

It is an arithmetic number, because the mean of its divisors is an integer number (8812584).

Almost surely, 2^113220505 is an apocalyptic number.

It is an amenable number.

113220505 is a deficient number, since it is larger than the sum of its proper divisors (27780839).

113220505 is an equidigital number, since it uses as much as digits as its factorization.

113220505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7536.

The product of its (nonzero) digits is 300, while the sum is 19.

The square root of 113220505 is about 10640.5124406675. The cubic root of 113220505 is about 483.7730776626.

Adding to 113220505 its reverse (505022311), we get a palindrome (618242816).

The spelling of 113220505 in words is "one hundred thirteen million, two hundred twenty thousand, five hundred five".