113503516221 has 4 divisors (see below), whose sum is σ = 151338021632. Its totient is φ = 75669010812.

The previous prime is 113503516213. The next prime is 113503516253. The reversal of 113503516221 is 122615305311.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 122615305311 = 3 ⋅40871768437.

It is not a de Polignac number, because 113503516221 - 2³ = 113503516213 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (113503516421) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18917252701 + ... + 18917252706.

It is an arithmetic number, because the mean of its divisors is an integer number (37834505408).

Almost surely, 2^113503516221 is an apocalyptic number.

It is an amenable number.

113503516221 is a deficient number, since it is larger than the sum of its proper divisors (37834505411).

113503516221 is an equidigital number, since it uses as much as digits as its factorization.

113503516221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37834505410.

The product of its (nonzero) digits is 5400, while the sum is 30.

The spelling of 113503516221 in words is "one hundred thirteen billion, five hundred three million, five hundred sixteen thousand, two hundred twenty-one".