115061221 has 4 divisors (see below), whose sum is σ = 125521344. Its totient is φ = 104601100.

The previous prime is 115061179. The next prime is 115061263. The reversal of 115061221 is 122160511.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (115061179) and next prime (115061263).

It is a cyclic number.

It is not a de Polignac number, because 115061221 - 2¹¹ = 115059173 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 (115062221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5230045 + ... + 5230066.

It is an arithmetic number, because the mean of its divisors is an integer number (31380336).

Almost surely, 2^115061221 is an apocalyptic number.

115061221 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

115061221 is a deficient number, since it is larger than the sum of its proper divisors (10460123).

115061221 is a wasteful number, since it uses less digits than its factorization.

115061221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10460122.

The product of its (nonzero) digits is 120, while the sum is 19.

The square root of 115061221 is about 10726.6593588125. The cubic root of 115061221 is about 486.3806918017.

The spelling of 115061221 in words is "one hundred fifteen million, sixty-one thousand, two hundred twenty-one".