115116033221 has 4 divisors (see below), whose sum is σ = 131561180832. Its totient is φ = 98670885612.

The previous prime is 115116033199. The next prime is 115116033233. The reversal of 115116033221 is 122330611511.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 122330611511 = 193703 ⋅631537.

It is a cyclic number.

It is not a de Polignac number, because 115116033221 - 2⁶ = 115116033157 is a prime.

It is a super-2 number, since 2×115116033221² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (115116033121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8222573795 + ... + 8222573808.

It is an arithmetic number, because the mean of its divisors is an integer number (32890295208).

Almost surely, 2^115116033221 is an apocalyptic number.

It is an amenable number.

115116033221 is a deficient number, since it is larger than the sum of its proper divisors (16445147611).

115116033221 is an equidigital number, since it uses as much as digits as its factorization.

115116033221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16445147610.

The product of its (nonzero) digits is 1080, while the sum is 26.

Adding to 115116033221 its reverse (122330611511), we get a palindrome (237446644732).

The spelling of 115116033221 in words is "one hundred fifteen billion, one hundred sixteen million, thirty-three thousand, two hundred twenty-one".