1200661012 has 6 divisors (see below), whose sum is σ = 2101156778. Its totient is φ = 600330504.

The previous prime is 1200660961. The next prime is 1200661027. The reversal of 1200661012 is 2101660021.

It can be written as a sum of positive squares in only one way, i.e., 1200206736 + 454276 = 34644^2 + 674^2 .

It is a congruent number.

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 as a sum of consecutive naturals, namely, 150082623 + ... + 150082630.

Almost surely, 2^1200661012 is an apocalyptic number.

It is an amenable number.

1200661012 is a deficient number, since it is larger than the sum of its proper divisors (900495766).

1200661012 is a wasteful number, since it uses less digits than its factorization.

1200661012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 300165257 (or 300165255 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 19.

The square root of 1200661012 is about 34650.5557242593. Note that the first 3 decimals coincide. The cubic root of 1200661012 is about 1062.8536528296.

Subtracting 1200661012 from its reverse (2101660021), we obtain a palindrome (900999009).

The spelling of 1200661012 in words is "one billion, two hundred million, six hundred sixty-one thousand, twelve".