1222204311 has 6 divisors (see below), whose sum is σ = 1765406240. Its totient is φ = 814802868.

The previous prime is 1222204289. The next prime is 1222204331. The reversal of 1222204311 is 1134022221.

It is a happy number.

1222204311 is a `hidden beast` number, since 12 + 2 + 220 + 431 + 1 = 666.

It is not a de Polignac number, because 1222204311 - 2¹⁵ = 1222171543 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 (1222204331) 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 5 ways as a sum of consecutive naturals, for example, 67900231 + ... + 67900248.

Almost surely, 2^1222204311 is an apocalyptic number.

1222204311 is a deficient number, since it is larger than the sum of its proper divisors (543201929).

1222204311 is a wasteful number, since it uses less digits than its factorization.

1222204311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 135800485 (or 135800482 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

The square root of 1222204311 is about 34960.0387728618. The cubic root of 1222204311 is about 1069.1728871676.

Adding to 1222204311 its reverse (1134022221), we get a palindrome (2356226532).

The spelling of 1222204311 in words is "one billion, two hundred twenty-two million, two hundred four thousand, three hundred eleven".