22020497 has 2 divisors, whose sum is σ = 22020498. Its totient is φ = 22020496.

The previous prime is 22020443. The next prime is 22020517. The reversal of 22020497 is 79402022.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 17007376 + 5013121 = 4124^2 + 2239^2 .

It is a cyclic number.

It is not a de Polignac number, because 22020497 - 2¹⁸ = 21758353 is a prime.

It is a super-3 number, since 3×22020497³ (a number of 23 digits) contains 333 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (22023497) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11010248 + 11010249.

It is an arithmetic number, because the mean of its divisors is an integer number (11010249).

Almost surely, 2^22020497 is an apocalyptic number.

It is an amenable number.

22020497 is a deficient number, since it is larger than the sum of its proper divisors (1).

22020497 is an equidigital number, since it uses as much as digits as its factorization.

22020497 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2016, while the sum is 26.

The square root of 22020497 is about 4692.6002386737. The cubic root of 22020497 is about 280.2909263577.

The spelling of 22020497 in words is "twenty-two million, twenty thousand, four hundred ninety-seven".