1123322213 has 6 divisors (see below), whose sum is σ = 1216378674. Its totient is φ = 1036912656.

The previous prime is 1123322147. The next prime is 1123322287. The reversal of 1123322213 is 3122233211.

It can be written as a sum of positive squares in 3 ways, for example, as 24930049 + 1098392164 = 4993^2 + 33142^2 .

It is not a de Polignac number, because 1123322213 - 2¹⁶ = 1123256677 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1123352213) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3323270 + ... + 3323607.

It is an arithmetic number, because the mean of its divisors is an integer number (202729779).

Almost surely, 2^1123322213 is an apocalyptic number.

1123322213 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

1123322213 is a deficient number, since it is larger than the sum of its proper divisors (93056461).

1123322213 is an equidigital number, since it uses as much as digits as its factorization.

1123322213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6646903 (or 6646890 counting only the distinct ones).

The product of its digits is 432, while the sum is 20.

The square root of 1123322213 is about 33515.9993585153. Note that the first 3 decimals coincide. The cubic root of 1123322213 is about 1039.5246264947.

Adding to 1123322213 its reverse (3122233211), we get a palindrome (4245555424).

The spelling of 1123322213 in words is "one billion, one hundred twenty-three million, three hundred twenty-two thousand, two hundred thirteen".