12002020031021 has 2 divisors, whose sum is σ = 12002020031022. Its totient is φ = 12002020031020.

The previous prime is 12002020030997. The next prime is 12002020031077. The reversal of 12002020031021 is 12013002020021.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10443981841225 + 1558038189796 = 3231715^2 + 1248214^2 .

It is an emirp because it is prime and its reverse (12013002020021) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12002020031021 - 2¹⁸ = 12002019768877 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12002020030987 and 12002020031005.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12002029031021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6001010015510 + 6001010015511.

It is an arithmetic number, because the mean of its divisors is an integer number (6001010015511).

Almost surely, 2^{12002020031021} is an apocalyptic number.

It is an amenable number.

12002020031021 is a deficient number, since it is larger than the sum of its proper divisors (1).

12002020031021 is an equidigital number, since it uses as much as digits as its factorization.

12002020031021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 48, while the sum is 14.

Adding to 12002020031021 its reverse (12013002020021), we get a palindrome (24015022051042).

The spelling of 12002020031021 in words is "twelve trillion, two billion, twenty million, thirty-one thousand, twenty-one".