12021021006 has 8 divisors (see below), whose sum is σ = 24042042024. Its totient is φ = 4007007000.

The previous prime is 12021020993. The next prime is 12021021007. The reversal of 12021021006 is 60012012021.

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

12021021006 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12021021007) 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, 1001751745 + ... + 1001751756.

It is an arithmetic number, because the mean of its divisors is an integer number (3005255253).

Almost surely, 2^12021021006 is an apocalyptic number.

12021021006 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12021021006 is a wasteful number, since it uses less digits than its factorization.

12021021006 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2003503506.

The product of its (nonzero) digits is 48, while the sum is 15.

Adding to 12021021006 its reverse (60012012021), we get a palindrome (72033033027).

The spelling of 12021021006 in words is "twelve billion, twenty-one million, twenty-one thousand, six".