115267221 has 6 divisors (see below), whose sum is σ = 166497110. Its totient is φ = 76844808.

The previous prime is 115267213. The next prime is 115267253. The reversal of 115267221 is 122762511.

It can be written as a sum of positive squares in only one way, i.e., 77000625 + 38266596 = 8775^2 + 6186^2 .

It is not a de Polignac number, because 115267221 - 2³ = 115267213 is a prime.

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 (115267121) 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 5 ways as a sum of consecutive naturals, for example, 6403726 + ... + 6403743.

Almost surely, 2^115267221 is an apocalyptic number.

It is an amenable number.

115267221 is a deficient number, since it is larger than the sum of its proper divisors (51229889).

115267221 is a wasteful number, since it uses less digits than its factorization.

115267221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12807475 (or 12807472 counting only the distinct ones).

The product of its digits is 1680, while the sum is 27.

The square root of 115267221 is about 10736.2573087645. The cubic root of 115267221 is about 486.6707828409.

The spelling of 115267221 in words is "one hundred fifteen million, two hundred sixty-seven thousand, two hundred twenty-one".