221355199 has 8 divisors (see below), whose sum is σ = 241649072. Its totient is φ = 201528000.

The previous prime is 221355179. The next prime is 221355227. The reversal of 221355199 is 991553122.

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 221355199 - 2¹¹ = 221353151 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221355179) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 115677 + ... + 117574.

It is an arithmetic number, because the mean of its divisors is an integer number (30206134).

Almost surely, 2^221355199 is an apocalyptic number.

221355199 is a deficient number, since it is larger than the sum of its proper divisors (20293873).

221355199 is a wasteful number, since it uses less digits than its factorization.

221355199 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 233337.

The product of its digits is 24300, while the sum is 37.

The square root of 221355199 is about 14878.0105860965. The cubic root of 221355199 is about 604.9180946881.

The spelling of 221355199 in words is "two hundred twenty-one million, three hundred fifty-five thousand, one hundred ninety-nine".