221443034 has 16 divisors (see below), whose sum is σ = 354670272. Its totient is φ = 103443648.

The previous prime is 221443007. The next prime is 221443051. The reversal of 221443034 is 430344122.

221443034 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is an unprimeable number.

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, 53999 + ... + 57954.

It is an arithmetic number, because the mean of its divisors is an integer number (22166892).

Almost surely, 2^221443034 is an apocalyptic number.

221443034 is a deficient number, since it is larger than the sum of its proper divisors (133227238).

221443034 is a wasteful number, since it uses less digits than its factorization.

221443034 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 112021.

The product of its (nonzero) digits is 2304, while the sum is 23.

The square root of 221443034 is about 14880.9621328730. The cubic root of 221443034 is about 604.9980957525.

Adding to 221443034 its reverse (430344122), we get a palindrome (651787156).

The spelling of 221443034 in words is "two hundred twenty-one million, four hundred forty-three thousand, thirty-four".