113804221 has 4 divisors (see below), whose sum is σ = 114811452. Its totient is φ = 112796992.

The previous prime is 113804213. The next prime is 113804227. The reversal of 113804221 is 122408311.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 122408311 = 3947 ⋅31013.

It can be written as a sum of positive squares in 2 ways, for example, as 16564900 + 97239321 = 4070^2 + 9861^2 .

It is a cyclic number.

It is not a de Polignac number, because 113804221 - 2³ = 113804213 is a prime.

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 113804192 and 113804201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (113804227) 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, 503446 + ... + 503671.

It is an arithmetic number, because the mean of its divisors is an integer number (28702863).

Almost surely, 2^113804221 is an apocalyptic number.

It is an amenable number.

113804221 is a deficient number, since it is larger than the sum of its proper divisors (1007231).

113804221 is a wasteful number, since it uses less digits than its factorization.

113804221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1007230.

The product of its (nonzero) digits is 384, while the sum is 22.

The square root of 113804221 is about 10667.9061206968. The cubic root of 113804221 is about 484.6030279857.

The spelling of 113804221 in words is "one hundred thirteen million, eight hundred four thousand, two hundred twenty-one".