221741234 has 64 divisors (see below), whose sum is σ = 421303680. Its totient is φ = 85969920.

The previous prime is 221741231. The next prime is 221741263. The reversal of 221741234 is 432147122.

221741234 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 (26).

It is not an unprimeable number, because it can be changed into a prime (221741231) 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 31 ways as a sum of consecutive naturals, for example, 286472 + ... + 287244.

It is an arithmetic number, because the mean of its divisors is an integer number (6582870).

Almost surely, 2^221741234 is an apocalyptic number.

221741234 is a deficient number, since it is larger than the sum of its proper divisors (199562446).

221741234 is a wasteful number, since it uses less digits than its factorization.

221741234 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 875.

The product of its digits is 2688, while the sum is 26.

The square root of 221741234 is about 14890.9782754526. The cubic root of 221741234 is about 605.2695418033.

Adding to 221741234 its reverse (432147122), we get a palindrome (653888356).

The spelling of 221741234 in words is "two hundred twenty-one million, seven hundred forty-one thousand, two hundred thirty-four".