229182221 has 4 divisors (see below), whose sum is σ = 229780992. Its totient is φ = 228583452.

The previous prime is 229182211. The next prime is 229182223. The reversal of 229182221 is 122281922.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-229182221 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 (229182223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 298811 + ... + 299576.

It is an arithmetic number, because the mean of its divisors is an integer number (57445248).

Almost surely, 2^229182221 is an apocalyptic number.

It is an amenable number.

229182221 is a deficient number, since it is larger than the sum of its proper divisors (598771).

229182221 is an equidigital number, since it uses as much as digits as its factorization.

229182221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 598770.

The product of its digits is 2304, while the sum is 29.

The square root of 229182221 is about 15138.7655044921. The cubic root of 229182221 is about 611.9655499497.

The spelling of 229182221 in words is "two hundred twenty-nine million, one hundred eighty-two thousand, two hundred twenty-one".