21201022202033 has 2 divisors, whose sum is σ = 21201022202034. Its totient is φ = 21201022202032.

The previous prime is 21201022201999. The next prime is 21201022202141. The reversal of 21201022202033 is 33020222010212.

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., 14545200109489 + 6655822092544 = 3813817^2 + 2579888^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21201022202033 is a prime.

It is a super-2 number, since 2×21201022202033² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 21201022201996 and 21201022202014.

It is not a weakly prime, because it can be changed into another prime (21201022202533) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10600511101016 + 10600511101017.

It is an arithmetic number, because the mean of its divisors is an integer number (10600511101017).

Almost surely, 2^{21201022202033} is an apocalyptic number.

It is an amenable number.

21201022202033 is a deficient number, since it is larger than the sum of its proper divisors (1).

21201022202033 is an equidigital number, since it uses as much as digits as its factorization.

21201022202033 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 576, while the sum is 20.

Adding to 21201022202033 its reverse (33020222010212), we get a palindrome (54221244212245).

The spelling of 21201022202033 in words is "twenty-one trillion, two hundred one billion, twenty-two million, two hundred two thousand, thirty-three".