12021173066 has 8 divisors (see below), whose sum is σ = 20607725280. Its totient is φ = 5151931308.

The previous prime is 12021173041. The next prime is 12021173069. The reversal of 12021173066 is 66037112021.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (12021173069) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 429327596 + ... + 429327623.

It is an arithmetic number, because the mean of its divisors is an integer number (2575965660).

Almost surely, 2^12021173066 is an apocalyptic number.

12021173066 is a deficient number, since it is larger than the sum of its proper divisors (8586552214).

12021173066 is an equidigital number, since it uses as much as digits as its factorization.

12021173066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 858655228.

The product of its (nonzero) digits is 3024, while the sum is 29.

Adding to 12021173066 its reverse (66037112021), we get a palindrome (78058285087).

The spelling of 12021173066 in words is "twelve billion, twenty-one million, one hundred seventy-three thousand, sixty-six".