20222569 has 2 divisors, whose sum is σ = 20222570. Its totient is φ = 20222568.

The previous prime is 20222561. The next prime is 20222581. The reversal of 20222569 is 96522202.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 15896169 + 4326400 = 3987^2 + 2080^2 .

It is a cyclic number.

It is not a de Polignac number, because 20222569 - 2³ = 20222561 is a prime.

It is a super-2 number, since 2×20222569² = 817904593919522, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (20222561) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10111284 + 10111285.

It is an arithmetic number, because the mean of its divisors is an integer number (10111285).

Almost surely, 2^20222569 is an apocalyptic number.

It is an amenable number.

20222569 is a deficient number, since it is larger than the sum of its proper divisors (1).

20222569 is an equidigital number, since it uses as much as digits as its factorization.

20222569 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4320, while the sum is 28.

The square root of 20222569 is about 4496.9510782307. The cubic root of 20222569 is about 272.4449581616. Note that the first 3 decimals are identical.

The spelling of 20222569 in words is "twenty million, two hundred twenty-two thousand, five hundred sixty-nine".