115005221211 has 4 divisors (see below), whose sum is σ = 153340294952. Its totient is φ = 76670147472.

The previous prime is 115005221159. The next prime is 115005221231. The reversal of 115005221211 is 112122500511.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 115005221211 - 2¹¹ = 115005219163 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (115005221231) 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, 19167536866 + ... + 19167536871.

It is an arithmetic number, because the mean of its divisors is an integer number (38335073738).

Almost surely, 2^115005221211 is an apocalyptic number.

115005221211 is a deficient number, since it is larger than the sum of its proper divisors (38335073741).

115005221211 is an equidigital number, since it uses as much as digits as its factorization.

115005221211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38335073740.

The product of its (nonzero) digits is 200, while the sum is 21.

Adding to 115005221211 its reverse (112122500511), we get a palindrome (227127721722).

The spelling of 115005221211 in words is "one hundred fifteen billion, five million, two hundred twenty-one thousand, two hundred eleven".