12321651 has 8 divisors (see below), whose sum is σ = 17395344. Its totient is φ = 7731200.

The previous prime is 12321649. The next prime is 12321653. The reversal of 12321651 is 15612321.

12321651 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (12321649) and next prime (12321653).

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

It is a cyclic number.

It is not a de Polignac number, because 12321651 - 2¹ = 12321649 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12321653) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 120750 + ... + 120851.

It is an arithmetic number, because the mean of its divisors is an integer number (2174418).

Almost surely, 2^12321651 is an apocalyptic number.

12321651 is a deficient number, since it is larger than the sum of its proper divisors (5073693).

12321651 is a wasteful number, since it uses less digits than its factorization.

12321651 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 241621.

The product of its digits is 360, while the sum is 21.

The square root of 12321651 is about 3510.2209332177. The cubic root of 12321651 is about 230.9703865638.

Adding to 12321651 its reverse (15612321), we get a palindrome (27933972).

The spelling of 12321651 in words is "twelve million, three hundred twenty-one thousand, six hundred fifty-one".