115241022521 has 4 divisors (see below), whose sum is σ = 115241783412. Its totient is φ = 115240261632.

The previous prime is 115241022493. The next prime is 115241022541. The reversal of 115241022521 is 125220142511.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 62357581225 + 52883441296 = 249715^2 + 229964^2 .

It is a cyclic number.

It is not a de Polignac number, because 115241022521 - 2¹⁴ = 115241006137 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (115241022541) 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, 67400 + ... + 484793.

It is an arithmetic number, because the mean of its divisors is an integer number (28810445853).

Almost surely, 2^115241022521 is an apocalyptic number.

It is an amenable number.

115241022521 is a deficient number, since it is larger than the sum of its proper divisors (760891).

115241022521 is an equidigital number, since it uses as much as digits as its factorization.

115241022521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 760890.

The product of its (nonzero) digits is 1600, while the sum is 26.

The spelling of 115241022521 in words is "one hundred fifteen billion, two hundred forty-one million, twenty-two thousand, five hundred twenty-one".