12066621172 has 24 divisors (see below), whose sum is σ = 21287562912. Its totient is φ = 5984503200.

The previous prime is 12066621139. The next prime is 12066621173. The reversal of 12066621172 is 27112666021.

It is a hoax number, since the sum of its digits (34) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12066621173) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1600203 + ... + 1607725.

It is an arithmetic number, because the mean of its divisors is an integer number (886981788).

Almost surely, 2^12066621172 is an apocalyptic number.

It is an amenable number.

12066621172 is a deficient number, since it is larger than the sum of its proper divisors (9220941740).

12066621172 is a wasteful number, since it uses less digits than its factorization.

12066621172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10719 (or 10717 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 34.

The spelling of 12066621172 in words is "twelve billion, sixty-six million, six hundred twenty-one thousand, one hundred seventy-two".