1200222112 has 24 divisors (see below), whose sum is σ = 2364088356. Its totient is φ = 599818752.

The previous prime is 1200222109. The next prime is 1200222113. The reversal of 1200222112 is 2112220021.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 1200206736 + 15376 = 34644^2 + 124^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1200222092 and 1200222101.

It is not an unprimeable number, because it can be changed into a prime (1200222113) 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, 67468 + ... + 83380.

Almost surely, 2^1200222112 is an apocalyptic number.

It is an amenable number.

1200222112 is a deficient number, since it is larger than the sum of its proper divisors (1163866244).

1200222112 is a wasteful number, since it uses less digits than its factorization.

1200222112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18280 (or 18272 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 13.

The square root of 1200222112 is about 34644.2219136179. The cubic root of 1200222112 is about 1062.7241288101.

Adding to 1200222112 its reverse (2112220021), we get a palindrome (3312442133).

The spelling of 1200222112 in words is "one billion, two hundred million, two hundred twenty-two thousand, one hundred twelve".