113221445 has 8 divisors (see below), whose sum is σ = 143857944. Its totient is φ = 85249024.

The previous prime is 113221441. The next prime is 113221447. The reversal of 113221445 is 544122311.

It can be written as a sum of positive squares in 4 ways, for example, as 3265249 + 109956196 = 1807^2 + 10486^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 113221445 - 2² = 113221441 is a prime.

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 113221445.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (113221441) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 665924 + ... + 666093.

It is an arithmetic number, because the mean of its divisors is an integer number (17982243).

Almost surely, 2^113221445 is an apocalyptic number.

It is an amenable number.

113221445 is a deficient number, since it is larger than the sum of its proper divisors (30636499).

113221445 is a wasteful number, since it uses less digits than its factorization.

113221445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1332039.

The product of its digits is 960, while the sum is 23.

The square root of 113221445 is about 10640.5566113808. The cubic root of 113221445 is about 483.7744164820.

Adding to 113221445 its reverse (544122311), we get a palindrome (657343756).

The spelling of 113221445 in words is "one hundred thirteen million, two hundred twenty-one thousand, four hundred forty-five".