20922163 has 2 divisors, whose sum is σ = 20922164. Its totient is φ = 20922162.

The previous prime is 20922151. The next prime is 20922169. The reversal of 20922163 is 36122902.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20922163 - 2¹⁷ = 20791091 is a prime.

It is equal to p_1325347 and since 20922163 and 1325347 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (20922169) 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, 10461081 + 10461082.

It is an arithmetic number, because the mean of its divisors is an integer number (10461082).

Almost surely, 2^20922163 is an apocalyptic number.

20922163 is a deficient number, since it is larger than the sum of its proper divisors (1).

20922163 is an equidigital number, since it uses as much as digits as its factorization.

20922163 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1296, while the sum is 25.

The square root of 20922163 is about 4574.0750977657. The cubic root of 20922163 is about 275.5511283529.

The spelling of 20922163 in words is "twenty million, nine hundred twenty-two thousand, one hundred sixty-three".