1222033213 has 4 divisors (see below), whose sum is σ = 1238773468. Its totient is φ = 1205292960.

The previous prime is 1222033199. The next prime is 1222033247. The reversal of 1222033213 is 3123302221.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 257185369 + 964847844 = 16037^2 + 31062^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1222033213 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1222033273) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8370018 + ... + 8370163.

It is an arithmetic number, because the mean of its divisors is an integer number (309693367).

Almost surely, 2^1222033213 is an apocalyptic number.

It is an amenable number.

1222033213 is a deficient number, since it is larger than the sum of its proper divisors (16740255).

1222033213 is an equidigital number, since it uses as much as digits as its factorization.

1222033213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16740254.

The product of its (nonzero) digits is 432, while the sum is 19.

The square root of 1222033213 is about 34957.5916361525. The cubic root of 1222033213 is about 1069.1229931965.

Adding to 1222033213 its reverse (3123302221), we get a palindrome (4345335434).

The spelling of 1222033213 in words is "one billion, two hundred twenty-two million, thirty-three thousand, two hundred thirteen".