12021660003 has 8 divisors (see below), whose sum is σ = 16058510416. Its totient is φ = 7999624800.

The previous prime is 12021659977. The next prime is 12021660011. The reversal of 12021660003 is 30006612021.

It is a happy number.

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

It is not a de Polignac number, because 12021660003 - 2¹⁶ = 12021594467 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12021660043) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3701908 + ... + 3705153.

It is an arithmetic number, because the mean of its divisors is an integer number (2007313802).

Almost surely, 2^12021660003 is an apocalyptic number.

12021660003 is a deficient number, since it is larger than the sum of its proper divisors (4036850413).

12021660003 is an equidigital number, since it uses as much as digits as its factorization.

12021660003 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7407605.

The product of its (nonzero) digits is 432, while the sum is 21.

The spelling of 12021660003 in words is "twelve billion, twenty-one million, six hundred sixty thousand, three".