1123222013 has 2 divisors, whose sum is σ = 1123222014. Its totient is φ = 1123222012.

The previous prime is 1123222003. The next prime is 1123222021. The reversal of 1123222013 is 3102223211.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 747366244 + 375855769 = 27338^2 + 19387^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1123222013 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1123221982 and 1123222000.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1123222003) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 561611006 + 561611007.

It is an arithmetic number, because the mean of its divisors is an integer number (561611007).

Almost surely, 2^1123222013 is an apocalyptic number.

It is an amenable number.

1123222013 is a deficient number, since it is larger than the sum of its proper divisors (1).

1123222013 is an equidigital number, since it uses as much as digits as its factorization.

1123222013 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 1123222013 is about 33514.5045167014. The cubic root of 1123222013 is about 1039.4937171487.

Adding to 1123222013 its reverse (3102223211), we get a palindrome (4225445224).

The spelling of 1123222013 in words is "one billion, one hundred twenty-three million, two hundred twenty-two thousand, thirteen".