113121355 has 4 divisors (see below), whose sum is σ = 135745632. Its totient is φ = 90497080.

The previous prime is 113121343. The next prime is 113121361. The reversal of 113121355 is 553121311.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 113121355 - 2⁷ = 113121227 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11312131 + ... + 11312140.

It is an arithmetic number, because the mean of its divisors is an integer number (33936408).

Almost surely, 2^113121355 is an apocalyptic number.

113121355 is a deficient number, since it is larger than the sum of its proper divisors (22624277).

113121355 is an equidigital number, since it uses as much as digits as its factorization.

113121355 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22624276.

The product of its digits is 450, while the sum is 22.

The square root of 113121355 is about 10635.8523400807. The cubic root of 113121355 is about 483.6318190653.

Adding to 113121355 its reverse (553121311), we get a palindrome (666242666).

The spelling of 113121355 in words is "one hundred thirteen million, one hundred twenty-one thousand, three hundred fifty-five".