922221 has 12 divisors (see below), whose sum is σ = 1363648. Its totient is φ = 600264.

The previous prime is 922217. The next prime is 922223. The reversal of 922221 is 122229.

922221 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 922221 - 2² = 922217 is a prime.

It is a Duffinian number.

It is a nialpdrome in base 10.

It is a junction number, because it is equal to n+sod(n) for n = 922194 and 922203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (922223) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 805 + ... + 1578.

2⁹²²²²¹ is an apocalyptic number.

It is an amenable number.

922221 is a deficient number, since it is larger than the sum of its proper divisors (441427).

922221 is a wasteful number, since it uses less digits than its factorization.

922221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2432 (or 2429 counting only the distinct ones).

The product of its digits is 144, while the sum is 18.

The square root of 922221 is about 960.3233830330. The cubic root of 922221 is about 97.3370849349.

The spelling of 922221 in words is "nine hundred twenty-two thousand, two hundred twenty-one".