221099995 has 8 divisors (see below), whose sum is σ = 266667984. Its totient is φ = 175981344.

The previous prime is 221099993. The next prime is 221099999. The reversal of 221099995 is 599990122.

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 221099995 - 2¹ = 221099993 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (221099993) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 111249 + ... + 113218.

It is an arithmetic number, because the mean of its divisors is an integer number (33333498).

Almost surely, 2^221099995 is an apocalyptic number.

221099995 is a deficient number, since it is larger than the sum of its proper divisors (45567989).

221099995 is a wasteful number, since it uses less digits than its factorization.

221099995 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 224669.

The product of its (nonzero) digits is 131220, while the sum is 46.

The square root of 221099995 is about 14869.4315627733. The cubic root of 221099995 is about 604.6855319951.

The spelling of 221099995 in words is "two hundred twenty-one million, ninety-nine thousand, nine hundred ninety-five".