222188850 has 144 divisors (see below), whose sum is σ = 677040000. Its totient is φ = 51788160.

The previous prime is 222188833. The next prime is 222188851. The reversal of 222188850 is 58881222.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (222188851) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 110151 + ... + 112149.

Almost surely, 2^222188850 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 222188850, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (338520000).

222188850 is an abundant number, since it is smaller than the sum of its proper divisors (454851150).

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

222188850 is a wasteful number, since it uses less digits than its factorization.

222188850 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2049 (or 2041 counting only the distinct ones).

The product of its (nonzero) digits is 20480, while the sum is 36.

The square root of 222188850 is about 14906.0004696095. Note that the first 3 decimals coincide. The cubic root of 222188850 is about 605.6765420833.

Subtracting from 222188850 its reverse (58881222), we obtain a triangular number (163307628 = T₁₈₀₇₂).

The spelling of 222188850 in words is "two hundred twenty-two million, one hundred eighty-eight thousand, eight hundred fifty".