113204120221 has 4 divisors (see below), whose sum is σ = 113218175200. Its totient is φ = 113190065244.

The previous prime is 113204120177. The next prime is 113204120243. The reversal of 113204120221 is 122021402311.

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: 122021402311 = 19 ⋅6422179069.

It is a cyclic number.

It is not a de Polignac number, because 113204120221 - 2¹³ = 113204112029 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 (113204120261) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7015401 + ... + 7031518.

It is an arithmetic number, because the mean of its divisors is an integer number (28304543800).

Almost surely, 2^113204120221 is an apocalyptic number.

It is an amenable number.

113204120221 is a deficient number, since it is larger than the sum of its proper divisors (14054979).

113204120221 is an equidigital number, since it uses as much as digits as its factorization.

113204120221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14054978.

The product of its (nonzero) digits is 192, while the sum is 19.

Adding to 113204120221 its reverse (122021402311), we get a palindrome (235225522532).

The spelling of 113204120221 in words is "one hundred thirteen billion, two hundred four million, one hundred twenty thousand, two hundred twenty-one".