12321666010 has 8 divisors (see below), whose sum is σ = 22178998836. Its totient is φ = 4928666400.

The previous prime is 12321666001. The next prime is 12321666047. The reversal of 12321666010 is 1066612321.

It is a Cunningham number, because it is equal to 111003²+1.

It can be written as a sum of positive squares in 2 ways, for example, as 12321666009 + 1 = 111003^2 + 1^2 .

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

It is a self number, because there is not a number n which added to its sum of digits gives 12321666010.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 616083291 + ... + 616083310.

Almost surely, 2^12321666010 is an apocalyptic number.

12321666010 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12321666010 is a deficient number, since it is larger than the sum of its proper divisors (9857332826).

12321666010 is a wasteful number, since it uses less digits than its factorization.

12321666010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1232166608.

The product of its (nonzero) digits is 2592, while the sum is 28.

The spelling of 12321666010 in words is "twelve billion, three hundred twenty-one million, six hundred sixty-six thousand, ten".