115215216201 has 6 divisors (see below), whose sum is σ = 166421978970. Its totient is φ = 76810144128.

The previous prime is 115215216197. The next prime is 115215216211. The reversal of 115215216201 is 102612512511.

It is a happy number.

115215216201 is a `hidden beast` number, since 1 + 1 + 5 + 2 + 15 + 21 + 620 + 1 = 666.

It can be written as a sum of positive squares in only one way, i.e., 105404115600 + 9811100601 = 324660^2 + 99051^2 .

It is not a de Polignac number, because 115215216201 - 2² = 115215216197 is a prime.

It is not an unprimeable number, because it can be changed into a prime (115215216211) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 6400845336 + ... + 6400845353.

It is an arithmetic number, because the mean of its divisors is an integer number (27736996495).

Almost surely, 2^115215216201 is an apocalyptic number.

It is an amenable number.

115215216201 is a deficient number, since it is larger than the sum of its proper divisors (51206762769).

115215216201 is a wasteful number, since it uses less digits than its factorization.

115215216201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12801690695 (or 12801690692 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 27.

Adding to 115215216201 its reverse (102612512511), we get a palindrome (217827728712).

The spelling of 115215216201 in words is "one hundred fifteen billion, two hundred fifteen million, two hundred sixteen thousand, two hundred one".