115221236 has 12 divisors (see below), whose sum is σ = 217147812. Its totient is φ = 53179008.

The previous prime is 115221233. The next prime is 115221251. The reversal of 115221236 is 632122511.

It can be written as a sum of positive squares in 2 ways, for example, as 74822500 + 40398736 = 8650^2 + 6356^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (115221233) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1107845 + ... + 1107948.

It is an arithmetic number, because the mean of its divisors is an integer number (18095651).

Almost surely, 2^115221236 is an apocalyptic number.

It is an amenable number.

115221236 is a deficient number, since it is larger than the sum of its proper divisors (101926576).

115221236 is a wasteful number, since it uses less digits than its factorization.

115221236 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2215810 (or 2215808 counting only the distinct ones).

The product of its digits is 720, while the sum is 23.

The square root of 115221236 is about 10734.1155201535. The cubic root of 115221236 is about 486.6060563370.

Adding to 115221236 its reverse (632122511), we get a palindrome (747343747).

The spelling of 115221236 in words is "one hundred fifteen million, two hundred twenty-one thousand, two hundred thirty-six".