222006891 has 8 divisors (see below), whose sum is σ = 296113104. Its totient is φ = 147952640.

The previous prime is 222006857. The next prime is 222006901. The reversal of 222006891 is 198600222.

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

It is a cyclic number.

It is not a de Polignac number, because 222006891 - 2¹⁴ = 221990507 is a prime.

It is not an unprimeable number, because it can be changed into a prime (222006091) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1590 + ... + 21131.

It is an arithmetic number, because the mean of its divisors is an integer number (37014138).

Almost surely, 2^222006891 is an apocalyptic number.

222006891 is a deficient number, since it is larger than the sum of its proper divisors (74106213).

222006891 is a wasteful number, since it uses less digits than its factorization.

222006891 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25981.

The product of its (nonzero) digits is 3456, while the sum is 30.

The square root of 222006891 is about 14899.8956707757. The cubic root of 222006891 is about 605.5111596527.

The spelling of 222006891 in words is "two hundred twenty-two million, six thousand, eight hundred ninety-one".