21002011201933 has 2 divisors, whose sum is σ = 21002011201934. Its totient is φ = 21002011201932.

The previous prime is 21002011201909. The next prime is 21002011202017. The reversal of 21002011201933 is 33910211020012.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 13947558337449 + 7054452864484 = 3734643^2 + 2656022^2 .

It is a cyclic number.

It is not a de Polignac number, because 21002011201933 - 2²⁹ = 21001474331021 is a prime.

It is a super-2 number, since 2×21002011201933² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 21002011201898 and 21002011201907.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21002011201333) 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, 10501005600966 + 10501005600967.

It is an arithmetic number, because the mean of its divisors is an integer number (10501005600967).

Almost surely, 2^{21002011201933} is an apocalyptic number.

It is an amenable number.

21002011201933 is a deficient number, since it is larger than the sum of its proper divisors (1).

21002011201933 is an equidigital number, since it uses as much as digits as its factorization.

21002011201933 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 648, while the sum is 25.

Adding to 21002011201933 its reverse (33910211020012), we get a palindrome (54912222221945).

The spelling of 21002011201933 in words is "twenty-one trillion, two billion, eleven million, two hundred one thousand, nine hundred thirty-three".