12021330623 has 2 divisors, whose sum is σ = 12021330624. Its totient is φ = 12021330622.

The previous prime is 12021330619. The next prime is 12021330631. The reversal of 12021330623 is 32603312021.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 12021330623 - 2² = 12021330619 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12021330823) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6010665311 + 6010665312.

It is an arithmetic number, because the mean of its divisors is an integer number (6010665312).

Almost surely, 2^12021330623 is an apocalyptic number.

12021330623 is a deficient number, since it is larger than the sum of its proper divisors (1).

12021330623 is an equidigital number, since it uses as much as digits as its factorization.

12021330623 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1296, while the sum is 23.

Adding to 12021330623 its reverse (32603312021), we get a palindrome (44624642644).

The spelling of 12021330623 in words is "twelve billion, twenty-one million, three hundred thirty thousand, six hundred twenty-three".