221099094 has 24 divisors (see below), whose sum is σ = 482550120. Its totient is φ = 73160928.

The previous prime is 221099083. The next prime is 221099111. The reversal of 221099094 is 490990122.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 42364 + ... + 47295.

It is an arithmetic number, because the mean of its divisors is an integer number (20106255).

Almost surely, 2^221099094 is an apocalyptic number.

221099094 is an abundant number, since it is smaller than the sum of its proper divisors (261451026).

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

221099094 is a wasteful number, since it uses less digits than its factorization.

221099094 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 89804 (or 89801 counting only the distinct ones).

The product of its (nonzero) digits is 11664, while the sum is 36.

The square root of 221099094 is about 14869.4012656865. The cubic root of 221099094 is about 604.6847106135.

The spelling of 221099094 in words is "two hundred twenty-one million, ninety-nine thousand, ninety-four".