115224221 has 8 divisors (see below), whose sum is σ = 136225920. Its totient is φ = 95357808.

The previous prime is 115224217. The next prime is 115224223. The reversal of 115224221 is 122422511.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 115224221 - 2² = 115224217 is a prime.

It is a super-2 number, since 2×115224221² = 26553242210113682, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 115224193 and 115224202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (115224223) 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 7 ways as a sum of consecutive naturals, for example, 283601 + ... + 284006.

It is an arithmetic number, because the mean of its divisors is an integer number (17028240).

Almost surely, 2^115224221 is an apocalyptic number.

It is an amenable number.

115224221 is a deficient number, since it is larger than the sum of its proper divisors (21001699).

115224221 is an equidigital number, since it uses as much as digits as its factorization.

115224221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 567643.

The product of its digits is 320, while the sum is 20.

The square root of 115224221 is about 10734.2545619153. The cubic root of 115224221 is about 486.6102584170.

Adding to 115224221 its reverse (122422511), we get a palindrome (237646732).

The spelling of 115224221 in words is "one hundred fifteen million, two hundred twenty-four thousand, two hundred twenty-one".