1123220239 has 2 divisors, whose sum is σ = 1123220240. Its totient is φ = 1123220238.

The previous prime is 1123220221. The next prime is 1123220261. The reversal of 1123220239 is 9320223211.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1123220239 - 2¹³ = 1123212047 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1123226239) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 561610119 + 561610120.

It is an arithmetic number, because the mean of its divisors is an integer number (561610120).

Almost surely, 2^1123220239 is an apocalyptic number.

1123220239 is a deficient number, since it is larger than the sum of its proper divisors (1).

1123220239 is an equidigital number, since it uses as much as digits as its factorization.

1123220239 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1296, while the sum is 25.

The square root of 1123220239 is about 33514.4780505381. The cubic root of 1123220239 is about 1039.4931698948.

The spelling of 1123220239 in words is "one billion, one hundred twenty-three million, two hundred twenty thousand, two hundred thirty-nine".