116457221 has 4 divisors (see below), whose sum is σ = 117108000. Its totient is φ = 115806444.

The previous prime is 116457203. The next prime is 116457239. The reversal of 116457221 is 122754611.

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 (116457203) and next prime (116457239).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-116457221 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (116459221) 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, 325121 + ... + 325478.

It is an arithmetic number, because the mean of its divisors is an integer number (29277000).

Almost surely, 2^116457221 is an apocalyptic number.

It is an amenable number.

116457221 is a deficient number, since it is larger than the sum of its proper divisors (650779).

116457221 is an equidigital number, since it uses as much as digits as its factorization.

116457221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 650778.

The product of its digits is 3360, while the sum is 29.

The square root of 116457221 is about 10791.5346915997. The cubic root of 116457221 is about 488.3398222634.

It can be divided in two parts, 1164 and 57221, that added together give a palindrome (58385).

The spelling of 116457221 in words is "one hundred sixteen million, four hundred fifty-seven thousand, two hundred twenty-one".