21102001022233 has 2 divisors, whose sum is σ = 21102001022234. Its totient is φ = 21102001022232.

The previous prime is 21102001022197. The next prime is 21102001022237. The reversal of 21102001022233 is 33222010020112.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 21057112972809 + 44888049424 = 4588803^2 + 211868^2 .

It is a cyclic number.

It is not a de Polignac number, because 21102001022233 - 2¹³ = 21102001014041 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 21102001022233.

It is not a weakly prime, because it can be changed into another prime (21102001022237) 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, 10551000511116 + 10551000511117.

It is an arithmetic number, because the mean of its divisors is an integer number (10551000511117).

Almost surely, 2^{21102001022233} is an apocalyptic number.

It is an amenable number.

21102001022233 is a deficient number, since it is larger than the sum of its proper divisors (1).

21102001022233 is an equidigital number, since it uses as much as digits as its factorization.

21102001022233 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 21102001022233 its reverse (33222010020112), we get a palindrome (54324011042345).

The spelling of 21102001022233 in words is "twenty-one trillion, one hundred two billion, one million, twenty-two thousand, two hundred thirty-three".