12321000002 has 12 divisors (see below), whose sum is σ = 19632597810. Its totient is φ = 5798117376.

The previous prime is 12320999993. The next prime is 12321000007. The reversal of 12321000002 is 20000012321.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 10660356001 + 1660644001 = 103249^2 + 40751^2 .

It is not an unprimeable number, because it can be changed into a prime (12321000007) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 10657727 + ... + 10658882.

Almost surely, 2^12321000002 is an apocalyptic number.

12321000002 is a deficient number, since it is larger than the sum of its proper divisors (7311597808).

12321000002 is a wasteful number, since it uses less digits than its factorization.

12321000002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21316645 (or 21316628 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 11.

Adding to 12321000002 its reverse (20000012321), we get a palindrome (32321012323).

The spelling of 12321000002 in words is "twelve billion, three hundred twenty-one million, two", and thus it is an aban number.