12021325663 has 2 divisors, whose sum is σ = 12021325664. Its totient is φ = 12021325662.

The previous prime is 12021325661. The next prime is 12021325699. The reversal of 12021325663 is 36652312021.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 12021325663 - 2¹ = 12021325661 is a prime.

Together with 12021325661, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12021325661) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6010662831 + 6010662832.

It is an arithmetic number, because the mean of its divisors is an integer number (6010662832).

Almost surely, 2^12021325663 is an apocalyptic number.

12021325663 is a deficient number, since it is larger than the sum of its proper divisors (1).

12021325663 is an equidigital number, since it uses as much as digits as its factorization.

12021325663 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12960, while the sum is 31.

Adding to 12021325663 its reverse (36652312021), we get a palindrome (48673637684).

The spelling of 12021325663 in words is "twelve billion, twenty-one million, three hundred twenty-five thousand, six hundred sixty-three".