2012111912 has 8 divisors (see below), whose sum is σ = 3772709850. Its totient is φ = 1006055952.

The previous prime is 2012111903. The next prime is 2012111939. The reversal of 2012111912 is 2191112102.

It can be written as a sum of positive squares in only one way, i.e., 1667415556 + 344696356 = 40834^2 + 18566^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 125756987 + ... + 125757002.

Almost surely, 2^2012111912 is an apocalyptic number.

It is an amenable number.

2012111912 is a deficient number, since it is larger than the sum of its proper divisors (1760597938).

2012111912 is a wasteful number, since it uses less digits than its factorization.

2012111912 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 251513995 (or 251513991 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 20.

The square root of 2012111912 is about 44856.5704440275. The cubic root of 2012111912 is about 1262.4592751233.

The spelling of 2012111912 in words is "two billion, twelve million, one hundred eleven thousand, nine hundred twelve".