113124221 has 4 divisors (see below), whose sum is σ = 129284832. Its totient is φ = 96963612.

The previous prime is 113124211. The next prime is 113124223. The reversal of 113124221 is 122421311.

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 a cyclic number.

It is not a de Polignac number, because 113124221 - 2¹⁸ = 112862077 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 113124221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (113124223) 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, 8080295 + ... + 8080308.

It is an arithmetic number, because the mean of its divisors is an integer number (32321208).

Almost surely, 2^113124221 is an apocalyptic number.

It is an amenable number.

113124221 is a deficient number, since it is larger than the sum of its proper divisors (16160611).

113124221 is an equidigital number, since it uses as much as digits as its factorization.

113124221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16160610.

The product of its digits is 96, while the sum is 17.

The square root of 113124221 is about 10635.9870721997. The cubic root of 113124221 is about 483.6359034019.

Adding to 113124221 its reverse (122421311), we get a palindrome (235545532).

It can be divided in two parts, 1131 and 24221, that added together give a palindrome (25352).

The spelling of 113124221 in words is "one hundred thirteen million, one hundred twenty-four thousand, two hundred twenty-one".