115006221 has 24 divisors (see below), whose sum is σ = 190763040. Its totient is φ = 66031200.

The previous prime is 115006217. The next prime is 115006231. The reversal of 115006221 is 122600511.

It is not a de Polignac number, because 115006221 - 2² = 115006217 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 115006194 and 115006203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (115006201) 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, 28690 + ... + 32451.

It is an arithmetic number, because the mean of its divisors is an integer number (7948460).

Almost surely, 2^115006221 is an apocalyptic number.

115006221 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

115006221 is a deficient number, since it is larger than the sum of its proper divisors (75756819).

115006221 is a wasteful number, since it uses less digits than its factorization.

115006221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61177 (or 61174 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 18.

The square root of 115006221 is about 10724.0953464616. The cubic root of 115006221 is about 486.3031817558.

Adding to 115006221 its reverse (122600511), we get a palindrome (237606732).

The spelling of 115006221 in words is "one hundred fifteen million, six thousand, two hundred twenty-one".