115043445303221 has 16 divisors (see below), whose sum is σ = 122311148649984. Its totient is φ = 107964587263104.

The previous prime is 115043445303217. The next prime is 115043445303233. The reversal of 115043445303221 is 122303544340511.

It is a cyclic number.

It is not a de Polignac number, because 115043445303221 - 2² = 115043445303217 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 (115043445303251) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 315059465 + ... + 315424401.

It is an arithmetic number, because the mean of its divisors is an integer number (7644446790624).

Almost surely, 2^{115043445303221} is an apocalyptic number.

It is an amenable number.

115043445303221 is a deficient number, since it is larger than the sum of its proper divisors (7267703346763).

115043445303221 is a wasteful number, since it uses less digits than its factorization.

115043445303221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 623620.

The product of its (nonzero) digits is 172800, while the sum is 38.

Adding to 115043445303221 its reverse (122303544340511), we get a palindrome (237346989643732).

The spelling of 115043445303221 in words is "one hundred fifteen trillion, forty-three billion, four hundred forty-five million, three hundred three thousand, two hundred twenty-one".