20330021269 has 2 divisors, whose sum is σ = 20330021270. Its totient is φ = 20330021268.

The previous prime is 20330021171. The next prime is 20330021279. The reversal of 20330021269 is 96212003302.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 19068848100 + 1261173169 = 138090^2 + 35513^2 .

It is a cyclic number.

It is not a de Polignac number, because 20330021269 - 2¹¹ = 20330019221 is a prime.

It is a super-2 number, since 2×20330021269² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20330021279) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10165010634 + 10165010635.

It is an arithmetic number, because the mean of its divisors is an integer number (10165010635).

Almost surely, 2^20330021269 is an apocalyptic number.

It is an amenable number.

20330021269 is a deficient number, since it is larger than the sum of its proper divisors (1).

20330021269 is an equidigital number, since it uses as much as digits as its factorization.

20330021269 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3888, while the sum is 28.

The spelling of 20330021269 in words is "twenty billion, three hundred thirty million, twenty-one thousand, two hundred sixty-nine".