12045298021 has 2 divisors, whose sum is σ = 12045298022. Its totient is φ = 12045298020.

The previous prime is 12045298019. The next prime is 12045298051. The reversal of 12045298021 is 12089254021.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9029750625 + 3015547396 = 95025^2 + 54914^2 .

It is a cyclic number.

It is not a de Polignac number, because 12045298021 - 2¹ = 12045298019 is a prime.

Together with 12045298019, 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 (12045298051) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6022649010 + 6022649011.

It is an arithmetic number, because the mean of its divisors is an integer number (6022649011).

Almost surely, 2^12045298021 is an apocalyptic number.

It is an amenable number.

12045298021 is a deficient number, since it is larger than the sum of its proper divisors (1).

12045298021 is an equidigital number, since it uses as much as digits as its factorization.

12045298021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 11520, while the sum is 34.

The spelling of 12045298021 in words is "twelve billion, forty-five million, two hundred ninety-eight thousand, twenty-one".