115410221 has 4 divisors (see below), whose sum is σ = 115581372. Its totient is φ = 115239072.

The previous prime is 115410209. The next prime is 115410223. The reversal of 115410221 is 122014511.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 122014511 = 197 ⋅619363.

It can be written as a sum of positive squares in 2 ways, for example, as 114169225 + 1240996 = 10685^2 + 1114^2 .

It is a cyclic number.

It is not a de Polignac number, because 115410221 - 2¹⁰ = 115409197 is a prime.

It is a super-2 number, since 2×115410221² = 26639038222537682, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 115410221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (115410223) 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, 84560 + ... + 85913.

It is an arithmetic number, because the mean of its divisors is an integer number (28895343).

Almost surely, 2^115410221 is an apocalyptic number.

It is an amenable number.

115410221 is a deficient number, since it is larger than the sum of its proper divisors (171151).

115410221 is an equidigital number, since it uses as much as digits as its factorization.

115410221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 171150.

The product of its (nonzero) digits is 80, while the sum is 17.

The square root of 115410221 is about 10742.9149210072. The cubic root of 115410221 is about 486.8719535404.

Adding to 115410221 its reverse (122014511), we get a palindrome (237424732).

The spelling of 115410221 in words is "one hundred fifteen million, four hundred ten thousand, two hundred twenty-one".