1200135212 has 12 divisors (see below), whose sum is σ = 2101409016. Its totient is φ = 599732640.

The previous prime is 1200135199. The next prime is 1200135221. The reversal of 1200135212 is 2125310021.

It is a happy 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 3 ways as a sum of consecutive naturals, for example, 75593 + ... + 90080.

It is an arithmetic number, because the mean of its divisors is an integer number (175117418).

Almost surely, 2^1200135212 is an apocalyptic number.

It is an amenable number.

1200135212 is a deficient number, since it is larger than the sum of its proper divisors (901273804).

1200135212 is a wasteful number, since it uses less digits than its factorization.

1200135212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 167488 (or 167486 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 17.

The square root of 1200135212 is about 34642.9677135202. The cubic root of 1200135212 is about 1062.6984799588.

Adding to 1200135212 its reverse (2125310021), we get a palindrome (3325445233).

The spelling of 1200135212 in words is "one billion, two hundred million, one hundred thirty-five thousand, two hundred twelve".