115222181 has 8 divisors (see below), whose sum is σ = 118488864. Its totient is φ = 111963600.

The previous prime is 115222171. The next prime is 115222193. The reversal of 115222181 is 181222511.

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

It is a cyclic number.

It is not a de Polignac number, because 115222181 - 2⁶ = 115222117 is a prime.

It is a super-2 number, since 2×115222181² = 26552301988793522, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (115222171) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 37406 + ... + 40368.

It is an arithmetic number, because the mean of its divisors is an integer number (14811108).

Almost surely, 2^115222181 is an apocalyptic number.

It is an amenable number.

115222181 is a deficient number, since it is larger than the sum of its proper divisors (3266683).

115222181 is a wasteful number, since it uses less digits than its factorization.

115222181 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4051.

The product of its digits is 320, while the sum is 23.

The square root of 115222181 is about 10734.1595385945. The cubic root of 115222181 is about 486.6073866516.

Adding to 115222181 its reverse (181222511), we get a palindrome (296444692).

The spelling of 115222181 in words is "one hundred fifteen million, two hundred twenty-two thousand, one hundred eighty-one".