20322227 has 2 divisors, whose sum is σ = 20322228. Its totient is φ = 20322226.

The previous prime is 20322199. The next prime is 20322233. The reversal of 20322227 is 72222302.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20322227 - 2⁶ = 20322163 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 20322199 and 20322208.

It is not a weakly prime, because it can be changed into another prime (20322257) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10161113 + 10161114.

It is an arithmetic number, because the mean of its divisors is an integer number (10161114).

Almost surely, 2^20322227 is an apocalyptic number.

20322227 is a deficient number, since it is larger than the sum of its proper divisors (1).

20322227 is an equidigital number, since it uses as much as digits as its factorization.

20322227 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 672, while the sum is 20.

The square root of 20322227 is about 4508.0180789345. The cubic root of 20322227 is about 272.8917665477.

Adding to 20322227 its reverse (72222302), we get a palindrome (92544529).

The spelling of 20322227 in words is "twenty million, three hundred twenty-two thousand, two hundred twenty-seven".