922021 has 2 divisors, whose sum is σ = 922022. Its totient is φ = 922020.

The previous prime is 921989. The next prime is 922027. The reversal of 922021 is 120229.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 864900 + 57121 = 930^2 + 239^2 .

It is a cyclic number.

It is not a de Polignac number, because 922021 - 2⁵ = 921989 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 921986 and 922004.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (922027) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 461010 + 461011.

It is an arithmetic number, because the mean of its divisors is an integer number (461011).

2⁹²²⁰²¹ is an apocalyptic number.

It is an amenable number.

922021 is a deficient number, since it is larger than the sum of its proper divisors (1).

922021 is an equidigital number, since it uses as much as digits as its factorization.

922021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 72, while the sum is 16.

The square root of 922021 is about 960.2192457975. The cubic root of 922021 is about 97.3300480011.

The spelling of 922021 in words is "nine hundred twenty-two thousand, twenty-one".