1113221239 has 4 divisors (see below), whose sum is σ = 1198853656. Its totient is φ = 1027588824.

The previous prime is 1113221237. The next prime is 1113221243. The reversal of 1113221239 is 9321223111.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9321223111 = 67 ⋅139122733.

It is a cyclic number.

It is not a de Polignac number, because 1113221239 - 2¹ = 1113221237 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1113221233) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 42816189 + ... + 42816214.

It is an arithmetic number, because the mean of its divisors is an integer number (299713414).

Almost surely, 2^1113221239 is an apocalyptic number.

1113221239 is a deficient number, since it is larger than the sum of its proper divisors (85632417).

1113221239 is an equidigital number, since it uses as much as digits as its factorization.

1113221239 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85632416.

The product of its digits is 648, while the sum is 25.

The square root of 1113221239 is about 33364.9702382604. The cubic root of 1113221239 is about 1036.3994198239.

The spelling of 1113221239 in words is "one billion, one hundred thirteen million, two hundred twenty-one thousand, two hundred thirty-nine".