1222222112 has 24 divisors (see below), whose sum is σ = 2407765500. Its totient is φ = 610726144.

The previous prime is 1222222103. The next prime is 1222222121. The reversal of 1222222112 is 2112222221.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (1222222103) and next prime (1222222121).

It can be written as a sum of positive squares in 2 ways, for example, as 1073479696 + 148742416 = 32764^2 + 12196^2 .

It is a nude number because it is divisible by every one of its digits.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 43514 + ... + 65862.

Almost surely, 2^1222222112 is an apocalyptic number.

It is an amenable number.

1222222112 is a deficient number, since it is larger than the sum of its proper divisors (1185543388).

1222222112 is a wasteful number, since it uses less digits than its factorization.

1222222112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24068 (or 24060 counting only the distinct ones).

The product of its digits is 128, while the sum is 17.

The square root of 1222222112 is about 34960.2933626135. The cubic root of 1222222112 is about 1069.1780778585.

Adding to 1222222112 its reverse (2112222221), we get a palindrome (3334444333).

The spelling of 1222222112 in words is "one billion, two hundred twenty-two million, two hundred twenty-two thousand, one hundred twelve".