115447107221 has 8 divisors (see below), whose sum is σ = 118140607200. Its totient is φ = 112754002032.

The previous prime is 115447107197. The next prime is 115447107233. The reversal of 115447107221 is 122701744511.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-115447107221 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (115447107521) 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 7 ways as a sum of consecutive naturals, for example, 540731 + ... + 723383.

It is an arithmetic number, because the mean of its divisors is an integer number (14767575900).

Almost surely, 2^115447107221 is an apocalyptic number.

It is an amenable number.

115447107221 is a deficient number, since it is larger than the sum of its proper divisors (2693499979).

115447107221 is a wasteful number, since it uses less digits than its factorization.

115447107221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 197395.

The product of its (nonzero) digits is 15680, while the sum is 35.

The spelling of 115447107221 in words is "one hundred fifteen billion, four hundred forty-seven million, one hundred seven thousand, two hundred twenty-one".