1129812012 has 54 divisors (see below), whose sum is σ = 3322190508. Its totient is φ = 322802928.

The previous prime is 1129812001. The next prime is 1129812041. The reversal of 1129812012 is 2102189211.

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 17 ways as a sum of consecutive naturals, for example, 318478 + ... + 322005.

Almost surely, 2^1129812012 is an apocalyptic number.

1129812012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1129812012 is an abundant number, since it is smaller than the sum of its proper divisors (2192378496).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1129812012 is a wasteful number, since it uses less digits than its factorization.

1129812012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 640507 (or 640495 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 27.

The square root of 1129812012 is about 33612.6763587787. The cubic root of 1129812012 is about 1041.5226746274.

The spelling of 1129812012 in words is "one billion, one hundred twenty-nine million, eight hundred twelve thousand, twelve".