221330099 has 4 divisors (see below), whose sum is σ = 222566760. Its totient is φ = 220093440.

The previous prime is 221330071. The next prime is 221330119. The reversal of 221330099 is 990033122.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-221330099 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (221330899) 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, 618062 + ... + 618419.

It is an arithmetic number, because the mean of its divisors is an integer number (55641690).

Almost surely, 2^221330099 is an apocalyptic number.

221330099 is a deficient number, since it is larger than the sum of its proper divisors (1236661).

221330099 is a wasteful number, since it uses less digits than its factorization.

221330099 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1236660.

The product of its (nonzero) digits is 2916, while the sum is 29.

The square root of 221330099 is about 14877.1670354271. The cubic root of 221330099 is about 604.8952294498.

The spelling of 221330099 in words is "two hundred twenty-one million, three hundred thirty thousand, ninety-nine".