221040199 has 4 divisors (see below), whose sum is σ = 228170560. Its totient is φ = 213909840.

The previous prime is 221040187. The next prime is 221040229. The reversal of 221040199 is 991040122.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 991040122 = 2 ⋅495520061.

It is a cyclic number.

It is not a de Polignac number, because 221040199 - 2¹¹ = 221038151 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 (221040179) 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, 3565134 + ... + 3565195.

It is an arithmetic number, because the mean of its divisors is an integer number (57042640).

Almost surely, 2^221040199 is an apocalyptic number.

221040199 is a deficient number, since it is larger than the sum of its proper divisors (7130361).

221040199 is an equidigital number, since it uses as much as digits as its factorization.

221040199 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7130360.

The product of its (nonzero) digits is 1296, while the sum is 28.

The square root of 221040199 is about 14867.4207245238. The cubic root of 221040199 is about 604.6310151295.

The spelling of 221040199 in words is "two hundred twenty-one million, forty thousand, one hundred ninety-nine".