1222251112 has 16 divisors (see below), whose sum is σ = 2294858340. Its totient is φ = 610288896.

The previous prime is 1222251109. The next prime is 1222251113. The reversal of 1222251112 is 2111522221.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 1221222916 + 1028196 = 34946^2 + 1014^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 1222251112.

It is not an unprimeable number, because it can be changed into a prime (1222251113) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 98353 + ... + 110080.

Almost surely, 2^1222251112 is an apocalyptic number.

It is an amenable number.

1222251112 is a deficient number, since it is larger than the sum of its proper divisors (1072607228).

1222251112 is a wasteful number, since it uses less digits than its factorization.

1222251112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 209172 (or 209168 counting only the distinct ones).

The product of its digits is 160, while the sum is 19.

The square root of 1222251112 is about 34960.7081163983. The cubic root of 1222251112 is about 1069.1865340190.

Adding to 1222251112 its reverse (2111522221), we get a palindrome (3333773333).

The spelling of 1222251112 in words is "one billion, two hundred twenty-two million, two hundred fifty-one thousand, one hundred twelve".