115104221 has 4 divisors (see below), whose sum is σ = 117055200. Its totient is φ = 113153244.

The previous prime is 115104211. The next prime is 115104239. The reversal of 115104221 is 122401511.

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: 122401511 = 83 ⋅1474717.

It is a cyclic number.

It is not a de Polignac number, because 115104221 - 2²⁶ = 47995357 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 115104221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (115104211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 975401 + ... + 975518.

It is an arithmetic number, because the mean of its divisors is an integer number (29263800).

Almost surely, 2^115104221 is an apocalyptic number.

It is an amenable number.

115104221 is a deficient number, since it is larger than the sum of its proper divisors (1950979).

115104221 is an equidigital number, since it uses as much as digits as its factorization.

115104221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1950978.

The product of its (nonzero) digits is 80, while the sum is 17.

The square root of 115104221 is about 10728.6635234777. The cubic root of 115104221 is about 486.4412733621.

Adding to 115104221 its reverse (122401511), we get a palindrome (237505732).

The spelling of 115104221 in words is "one hundred fifteen million, one hundred four thousand, two hundred twenty-one".