222091 has 4 divisors (see below), whose sum is σ = 233800. Its totient is φ = 210384.

The previous prime is 222073. The next prime is 222107. The reversal of 222091 is 190222.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 190222 = 2 ⋅95111.

It is a cyclic number.

It is not a de Polignac number, because 222091 - 2⁵ = 222059 is a prime.

It is a Duffinian number.

It is a nialpdrome in base 6.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222011) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5826 + ... + 5863.

It is an arithmetic number, because the mean of its divisors is an integer number (58450).

2²²²⁰⁹¹ is an apocalyptic number.

222091 is a deficient number, since it is larger than the sum of its proper divisors (11709).

222091 is a wasteful number, since it uses less digits than its factorization.

222091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11708.

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

The square root of 222091 is about 471.2653180534. The cubic root of 222091 is about 60.5587617501.

The spelling of 222091 in words is "two hundred twenty-two thousand, ninety-one".