221343199 has 16 divisors (see below), whose sum is σ = 277802496. Its totient is φ = 171324000.

The previous prime is 221343173. The next prime is 221343251. The reversal of 221343199 is 991343122.

It is a cyclic number.

It is not a de Polignac number, because 221343199 - 2⁷ = 221343071 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 (221343149) 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, 2109 + ... + 21145.

It is an arithmetic number, because the mean of its divisors is an integer number (17362656).

Almost surely, 2^221343199 is an apocalyptic number.

221343199 is a deficient number, since it is larger than the sum of its proper divisors (56459297).

221343199 is a wasteful number, since it uses less digits than its factorization.

221343199 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19206.

The product of its digits is 11664, while the sum is 34.

The square root of 221343199 is about 14877.6073009070. The cubic root of 221343199 is about 604.9071633158.

The spelling of 221343199 in words is "two hundred twenty-one million, three hundred forty-three thousand, one hundred ninety-nine".