12021321307 has 2 divisors, whose sum is σ = 12021321308. Its totient is φ = 12021321306.

The previous prime is 12021321287. The next prime is 12021321373. The reversal of 12021321307 is 70312312021.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12021321307 is a prime.

It is a super-2 number, since 2×12021321307² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (12021321007) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6010660653 + 6010660654.

It is an arithmetic number, because the mean of its divisors is an integer number (6010660654).

Almost surely, 2^12021321307 is an apocalyptic number.

12021321307 is a deficient number, since it is larger than the sum of its proper divisors (1).

12021321307 is an equidigital number, since it uses as much as digits as its factorization.

12021321307 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 504, while the sum is 22.

Adding to 12021321307 its reverse (70312312021), we get a palindrome (82333633328).

The spelling of 12021321307 in words is "twelve billion, twenty-one million, three hundred twenty-one thousand, three hundred seven".