115240050221 has 4 divisors (see below), whose sum is σ = 115240729344. Its totient is φ = 115239371100.

The previous prime is 115240050209. The next prime is 115240050223. The reversal of 115240050221 is 122050042511.

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 a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 122050042511 = 197 ⋅619543363.

It is a cyclic number.

It is not a de Polignac number, because 115240050221 - 2¹⁴ = 115240033837 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (115240050223) 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, 158006 + ... + 505416.

It is an arithmetic number, because the mean of its divisors is an integer number (28810182336).

Almost surely, 2^115240050221 is an apocalyptic number.

It is an amenable number.

115240050221 is a deficient number, since it is larger than the sum of its proper divisors (679123).

115240050221 is an equidigital number, since it uses as much as digits as its factorization.

115240050221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 679122.

The product of its (nonzero) digits is 800, while the sum is 23.

Adding to 115240050221 its reverse (122050042511), we get a palindrome (237290092732).

The spelling of 115240050221 in words is "one hundred fifteen billion, two hundred forty million, fifty thousand, two hundred twenty-one".