1113320221 has 16 divisors (see below), whose sum is σ = 1258379136. Its totient is φ = 977270976.

The previous prime is 1113320213. The next prime is 1113320231. The reversal of 1113320221 is 1220233111.

It is a cyclic number.

It is not a de Polignac number, because 1113320221 - 2³ = 1113320213 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1113320195 and 1113320204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1113320231) 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 15 ways as a sum of consecutive naturals, for example, 40966 + ... + 62488.

It is an arithmetic number, because the mean of its divisors is an integer number (78648696).

Almost surely, 2^1113320221 is an apocalyptic number.

It is an amenable number.

1113320221 is a deficient number, since it is larger than the sum of its proper divisors (145058915).

1113320221 is a wasteful number, since it uses less digits than its factorization.

1113320221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21732.

The product of its (nonzero) digits is 72, while the sum is 16.

The square root of 1113320221 is about 33366.4535274578. The cubic root of 1113320221 is about 1036.4301360443.

Adding to 1113320221 its reverse (1220233111), we get a palindrome (2333553332).

The spelling of 1113320221 in words is "one billion, one hundred thirteen million, three hundred twenty thousand, two hundred twenty-one".