12021000002 has 64 divisors (see below), whose sum is σ = 21238495488. Its totient is φ = 5047680000.

The previous prime is 12021000001. The next prime is 12021000007. The reversal of 12021000002 is 20000012021.

It is not an unprimeable number, because it can be changed into a prime (12021000001) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2092478 + ... + 2098214.

It is an arithmetic number, because the mean of its divisors is an integer number (331851492).

Almost surely, 2^12021000002 is an apocalyptic number.

12021000002 is a deficient number, since it is larger than the sum of its proper divisors (9217495486).

12021000002 is a wasteful number, since it uses less digits than its factorization.

12021000002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5915.

The product of its (nonzero) digits is 8, while the sum is 8.

Adding to 12021000002 its reverse (20000012021), we get a palindrome (32021012023).

The spelling of 12021000002 in words is "twelve billion, twenty-one million, two", and thus it is an aban number and an uban number.