115222211 has 16 divisors (see below), whose sum is σ = 126658560. Its totient is φ = 104176800.

The previous prime is 115222207. The next prime is 115222223. The reversal of 115222211 is 112222511.

It is not a de Polignac number, because 115222211 - 2² = 115222207 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 115222211.

It is not an unprimeable number, because it can be changed into a prime (115222231) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 154706 + ... + 155448.

It is an arithmetic number, because the mean of its divisors is an integer number (7916160).

Almost surely, 2^115222211 is an apocalyptic number.

115222211 is a deficient number, since it is larger than the sum of its proper divisors (11436349).

115222211 is a wasteful number, since it uses less digits than its factorization.

115222211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 986.

The product of its digits is 80, while the sum is 17.

The square root of 115222211 is about 10734.1609360024. The cubic root of 115222211 is about 486.6074288837.

Adding to 115222211 its reverse (112222511), we get a palindrome (227444722).

The spelling of 115222211 in words is "one hundred fifteen million, two hundred twenty-two thousand, two hundred eleven".