115220133 has 48 divisors (see below), whose sum is σ = 200318976. Its totient is φ = 62393760.

The previous prime is 115220129. The next prime is 115220141. The reversal of 115220133 is 331022511.

115220133 is a `hidden beast` number, since 11 + 522 + 0 + 133 = 666.

It is not a de Polignac number, because 115220133 - 2² = 115220129 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (115220113) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 189516 + ... + 190122.

It is an arithmetic number, because the mean of its divisors is an integer number (4173312).

Almost surely, 2^115220133 is an apocalyptic number.

It is an amenable number.

115220133 is a deficient number, since it is larger than the sum of its proper divisors (85098843).

115220133 is a wasteful number, since it uses less digits than its factorization.

115220133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 774 (or 771 counting only the distinct ones).

The product of its (nonzero) digits is 180, while the sum is 18.

The square root of 115220133 is about 10734.0641417871. The cubic root of 115220133 is about 486.6045035903.

Adding to 115220133 its reverse (331022511), we get a palindrome (446242644).

The spelling of 115220133 in words is "one hundred fifteen million, two hundred twenty thousand, one hundred thirty-three".