12021660004 has 24 divisors (see below), whose sum is σ = 21726822656. Its totient is φ = 5814180000.

The previous prime is 12021659977. The next prime is 12021660011. The reversal of 12021660004 is 40006612021.

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, 253579 + ... + 297229.

Almost surely, 2^12021660004 is an apocalyptic number.

It is an amenable number.

12021660004 is a deficient number, since it is larger than the sum of its proper divisors (9705162652).

12021660004 is a wasteful number, since it uses less digits than its factorization.

12021660004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45907 (or 45905 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 22.

The spelling of 12021660004 in words is "twelve billion, twenty-one million, six hundred sixty thousand, four".