115440214221 has 24 divisors (see below), whose sum is σ = 171672446400. Its totient is φ = 74705716800.

The previous prime is 115440214159. The next prime is 115440214271. The reversal of 115440214221 is 122412044511.

115440214221 is a `hidden beast` number, since 1 + 1 + 5 + 440 + 214 + 2 + 2 + 1 = 666.

It is not a de Polignac number, because 115440214221 - 2²⁷ = 115305996493 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (115440214271) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 712615 + ... + 859476.

It is an arithmetic number, because the mean of its divisors is an integer number (7153018600).

Almost surely, 2^115440214221 is an apocalyptic number.

It is an amenable number.

115440214221 is a deficient number, since it is larger than the sum of its proper divisors (56232232179).

115440214221 is a wasteful number, since it uses less digits than its factorization.

115440214221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1572337 (or 1572334 counting only the distinct ones).

The product of its (nonzero) digits is 2560, while the sum is 27.

Adding to 115440214221 its reverse (122412044511), we get a palindrome (237852258732).

The spelling of 115440214221 in words is "one hundred fifteen billion, four hundred forty million, two hundred fourteen thousand, two hundred twenty-one".