221099093 has 16 divisors (see below), whose sum is σ = 239858496. Its totient is φ = 203024640.

The previous prime is 221099083. The next prime is 221099111. The reversal of 221099093 is 390990122.

It is a cyclic number.

It is not a de Polignac number, because 221099093 - 2⁸ = 221098837 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221099033) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 189530 + ... + 190692.

It is an arithmetic number, because the mean of its divisors is an integer number (14991156).

Almost surely, 2^221099093 is an apocalyptic number.

It is an amenable number.

221099093 is a deficient number, since it is larger than the sum of its proper divisors (18759403).

221099093 is a wasteful number, since it uses less digits than its factorization.

221099093 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1444.

The product of its (nonzero) digits is 8748, while the sum is 35.

The square root of 221099093 is about 14869.4012320604. The cubic root of 221099093 is about 604.6847097019.

The spelling of 221099093 in words is "two hundred twenty-one million, ninety-nine thousand, ninety-three".