1222320412 has 6 divisors (see below), whose sum is σ = 2139060728. Its totient is φ = 611160204.

The previous prime is 1222320409. The next prime is 1222320427. The reversal of 1222320412 is 2140232221.

It is a self number, because there is not a number n which added to its sum of digits gives 1222320412.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 152790048 + ... + 152790055.

Almost surely, 2^1222320412 is an apocalyptic number.

It is an amenable number.

1222320412 is a deficient number, since it is larger than the sum of its proper divisors (916740316).

1222320412 is a wasteful number, since it uses less digits than its factorization.

1222320412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 305580107 (or 305580105 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 19.

The square root of 1222320412 is about 34961.6992149981. The cubic root of 1222320412 is about 1069.2067407849.

Adding to 1222320412 its reverse (2140232221), we get a palindrome (3362552633).

The spelling of 1222320412 in words is "one billion, two hundred twenty-two million, three hundred twenty thousand, four hundred twelve".