12002020022021 has 2 divisors, whose sum is σ = 12002020022022. Its totient is φ = 12002020022020.

The previous prime is 12002020021993. The next prime is 12002020022053. The reversal of 12002020022021 is 12022002020021.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10729096780900 + 1272923241121 = 3275530^2 + 1128239^2 .

It is a cyclic number.

It is not a de Polignac number, because 12002020022021 - 2¹⁴ = 12002020005637 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12002020021987 and 12002020022005.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12002020022221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6001010011010 + 6001010011011.

It is an arithmetic number, because the mean of its divisors is an integer number (6001010011011).

Almost surely, 2^{12002020022021} is an apocalyptic number.

It is an amenable number.

12002020022021 is a deficient number, since it is larger than the sum of its proper divisors (1).

12002020022021 is an equidigital number, since it uses as much as digits as its factorization.

12002020022021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 64, while the sum is 14.

Adding to 12002020022021 its reverse (12022002020021), we get a palindrome (24024022042042).

The spelling of 12002020022021 in words is "twelve trillion, two billion, twenty million, twenty-two thousand, twenty-one".