9201222 has 16 divisors (see below), whose sum is σ = 20447280. Its totient is φ = 3067056.

The previous prime is 9201221. The next prime is 9201253. The reversal of 9201222 is 2221029.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 9201195 and 9201204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9201221) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 85143 + ... + 85250.

It is an arithmetic number, because the mean of its divisors is an integer number (1277955).

Almost surely, 2^9201222 is an apocalyptic number.

9201222 is an abundant number, since it is smaller than the sum of its proper divisors (11246058).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

9201222 is a wasteful number, since it uses less digits than its factorization.

9201222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 170404 (or 170398 counting only the distinct ones).

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

The square root of 9201222 is about 3033.3516116665. The cubic root of 9201222 is about 209.5471875905.

The spelling of 9201222 in words is "nine million, two hundred one thousand, two hundred twenty-two".