91222 has 8 divisors (see below), whose sum is σ = 144936. Its totient is φ = 42912.

The previous prime is 91199. The next prime is 91229. The reversal of 91222 is 22219.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 91196 and 91205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91229) by changing a digit.

91222 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1308 + ... + 1375.

It is an arithmetic number, because the mean of its divisors is an integer number (18117).

2⁹¹²²² is an apocalyptic number.

91222 is a deficient number, since it is larger than the sum of its proper divisors (53714).

91222 is a wasteful number, since it uses less digits than its factorization.

91222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2702.

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

The square root of 91222 is about 302.0297998543. The cubic root of 91222 is about 45.0159614160.

It can be divided in two parts, 91 and 222, that multiplied together give a palindrome (20202).

The spelling of 91222 in words is "ninety-one thousand, two hundred twenty-two".