1113430221 has 12 divisors (see below), whose sum is σ = 1609228348. Its totient is φ = 741852864.

The previous prime is 1113430217. The next prime is 1113430223. The reversal of 1113430221 is 1220343111.

1113430221 is a `hidden beast` number, since 1 + 1 + 13 + 430 + 221 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 112656996 + 1000773225 = 10614^2 + 31635^2 .

It is not a de Polignac number, because 1113430221 - 2² = 1113430217 is a prime.

It is a super-2 number, since 2×1113430221² = 2479453714072217682, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1113430194 and 1113430203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1113430223) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 19510 + ... + 51063.

Almost surely, 2^1113430221 is an apocalyptic number.

It is an amenable number.

1113430221 is a deficient number, since it is larger than the sum of its proper divisors (495798127).

1113430221 is a wasteful number, since it uses less digits than its factorization.

1113430221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72332 (or 72329 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

The square root of 1113430221 is about 33368.1018489215. The cubic root of 1113430221 is about 1036.4642692489.

Adding to 1113430221 its reverse (1220343111), we get a palindrome (2333773332).

The spelling of 1113430221 in words is "one billion, one hundred thirteen million, four hundred thirty thousand, two hundred twenty-one".