10922221 has 2 divisors, whose sum is σ = 10922222. Its totient is φ = 10922220.

The previous prime is 10922167. The next prime is 10922227. The reversal of 10922221 is 12222901.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8934121 + 1988100 = 2989^2 + 1410^2 .

It is a cyclic number.

It is not a de Polignac number, because 10922221 - 2⁹ = 10921709 is a prime.

It is equal to p₇₂₁₇₀₂ and since 10922221 and 721702 have the same sum of digits, it is a Honaker prime.

It is a plaindrome in base 13.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10922227) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5461110 + 5461111.

It is an arithmetic number, because the mean of its divisors is an integer number (5461111).

Almost surely, 2^10922221 is an apocalyptic number.

It is an amenable number.

10922221 is a deficient number, since it is larger than the sum of its proper divisors (1).

10922221 is an equidigital number, since it uses as much as digits as its factorization.

10922221 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 144, while the sum is 19.

The square root of 10922221 is about 3304.8783638736. The cubic root of 10922221 is about 221.8725900948.

The spelling of 10922221 in words is "ten million, nine hundred twenty-two thousand, two hundred twenty-one".