21002211322033 has 2 divisors, whose sum is σ = 21002211322034. Its totient is φ = 21002211322032.

The previous prime is 21002211321947. The next prime is 21002211322061. The reversal of 21002211322033 is 33022311220012.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 20790526673569 + 211684648464 = 4559663^2 + 460092^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21002211322033 is a prime.

It is a super-2 number, since 2×21002211322033² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 21002211321995 and 21002211322013.

It is not a weakly prime, because it can be changed into another prime (21002211322093) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10501105661016 + 10501105661017.

It is an arithmetic number, because the mean of its divisors is an integer number (10501105661017).

Almost surely, 2^{21002211322033} is an apocalyptic number.

It is an amenable number.

21002211322033 is a deficient number, since it is larger than the sum of its proper divisors (1).

21002211322033 is an equidigital number, since it uses as much as digits as its factorization.

21002211322033 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 864, while the sum is 22.

Adding to 21002211322033 its reverse (33022311220012), we get a palindrome (54024522542045).

The spelling of 21002211322033 in words is "twenty-one trillion, two billion, two hundred eleven million, three hundred twenty-two thousand, thirty-three".