12021322663 has 8 divisors (see below), whose sum is σ = 13752224928. Its totient is φ = 10293813024.

The previous prime is 12021322601. The next prime is 12021322699. The reversal of 12021322663 is 36622312021.

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 12021322663 - 2¹³ = 12021314471 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12021325663) 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, 840556 + ... + 854737.

It is an arithmetic number, because the mean of its divisors is an integer number (1719028116).

Almost surely, 2^12021322663 is an apocalyptic number.

12021322663 is a deficient number, since it is larger than the sum of its proper divisors (1730902265).

12021322663 is a wasteful number, since it uses less digits than its factorization.

12021322663 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1696313.

The product of its (nonzero) digits is 5184, while the sum is 28.

Adding to 12021322663 its reverse (36622312021), we get a palindrome (48643634684).

The spelling of 12021322663 in words is "twelve billion, twenty-one million, three hundred twenty-two thousand, six hundred sixty-three".