113225621 has 4 divisors (see below), whose sum is σ = 113248044. Its totient is φ = 113203200.

The previous prime is 113225611. The next prime is 113225633. The reversal of 113225621 is 126522311.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 98287396 + 14938225 = 9914^2 + 3865^2 .

It is a cyclic number.

It is not a de Polignac number, because 113225621 - 2¹⁴ = 113209237 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 (113225611) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 311 + ... + 15051.

It is an arithmetic number, because the mean of its divisors is an integer number (28312011).

Almost surely, 2^113225621 is an apocalyptic number.

It is an amenable number.

113225621 is a deficient number, since it is larger than the sum of its proper divisors (22423).

113225621 is an equidigital number, since it uses as much as digits as its factorization.

113225621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22422.

The product of its digits is 720, while the sum is 23.

The square root of 113225621 is about 10640.7528399075. The cubic root of 113225621 is about 483.7803641689.

Adding to 113225621 its reverse (126522311), we get a palindrome (239747932).

The spelling of 113225621 in words is "one hundred thirteen million, two hundred twenty-five thousand, six hundred twenty-one".