1222437213 has 12 divisors (see below), whose sum is σ = 1766109280. Its totient is φ = 814788936.

The previous prime is 1222437199. The next prime is 1222437217. The reversal of 1222437213 is 3127342221.

1222437213 is a `hidden beast` number, since 1 + 222 + 437 + 2 + 1 + 3 = 666.

It is not a de Polignac number, because 1222437213 - 2⁹ = 1222436701 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 (1222437217) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 44448 + ... + 66486.

Almost surely, 2^1222437213 is an apocalyptic number.

It is an amenable number.

1222437213 is a deficient number, since it is larger than the sum of its proper divisors (543672067).

1222437213 is a wasteful number, since it uses less digits than its factorization.

1222437213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28208 (or 28205 counting only the distinct ones).

The product of its digits is 4032, while the sum is 27.

The square root of 1222437213 is about 34963.3695887567. The cubic root of 1222437213 is about 1069.2407963505.

Adding to 1222437213 its reverse (3127342221), we get a palindrome (4349779434).

The spelling of 1222437213 in words is "one billion, two hundred twenty-two million, four hundred thirty-seven thousand, two hundred thirteen".