21002011022233 has 2 divisors, whose sum is σ = 21002011022234. Its totient is φ = 21002011022232.

The previous prime is 21002011022189. The next prime is 21002011022261. The reversal of 21002011022233 is 33222011020012.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 20529118242649 + 472892779584 = 4530907^2 + 687672^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21002011022233 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 21002011022233.

It is not a weakly prime, because it can be changed into another prime (21002011022263) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10501005511116 + 10501005511117.

It is an arithmetic number, because the mean of its divisors is an integer number (10501005511117).

Almost surely, 2^{21002011022233} is an apocalyptic number.

It is an amenable number.

21002011022233 is a deficient number, since it is larger than the sum of its proper divisors (1).

21002011022233 is an equidigital number, since it uses as much as digits as its factorization.

21002011022233 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 21002011022233 its reverse (33222011020012), we get a palindrome (54224022042245).

The spelling of 21002011022233 in words is "twenty-one trillion, two billion, eleven million, twenty-two thousand, two hundred thirty-three".