1222051412 has 24 divisors (see below), whose sum is σ = 2192401512. Its totient is φ = 595673600.

The previous prime is 1222051399. The next prime is 1222051421. The reversal of 1222051412 is 2141502221.

It can be written as a sum of positive squares in 4 ways, for example, as 111429136 + 1110622276 = 10556^2 + 33326^2 .

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 in 7 ways as a sum of consecutive naturals, for example, 351362 + ... + 354822.

It is an arithmetic number, because the mean of its divisors is an integer number (91350063).

Almost surely, 2^1222051412 is an apocalyptic number.

It is an amenable number.

1222051412 is a deficient number, since it is larger than the sum of its proper divisors (970350100).

1222051412 is a wasteful number, since it uses less digits than its factorization.

1222051412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5659 (or 5657 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 20.

The square root of 1222051412 is about 34957.8519362961. The cubic root of 1222051412 is about 1069.1283004371.

Adding to 1222051412 its reverse (2141502221), we get a palindrome (3363553633).

The spelling of 1222051412 in words is "one billion, two hundred twenty-two million, fifty-one thousand, four hundred twelve".