12042665212066 has 16 divisors (see below), whose sum is σ = 19126652170680. Its totient is φ = 5667116942080.

The previous prime is 12042665212051. The next prime is 12042665212091. The reversal of 12042665212066 is 66021256624021.

It is a happy number.

12042665212066 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 9416790805041 + 2625874407025 = 3068679^2 + 1620455^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15425976 + ... + 16187836.

Almost surely, 2^{12042665212066} is an apocalyptic number.

12042665212066 is a deficient number, since it is larger than the sum of its proper divisors (7083986958614).

12042665212066 is a wasteful number, since it uses less digits than its factorization.

12042665212066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1226789.

The product of its (nonzero) digits is 414720, while the sum is 43.

The spelling of 12042665212066 in words is "twelve trillion, forty-two billion, six hundred sixty-five million, two hundred twelve thousand, sixty-six".