221413234 has 16 divisors (see below), whose sum is σ = 384766848. Its totient is φ = 93591072.

The previous prime is 221413211. The next prime is 221413237. The reversal of 221413234 is 432314122.

It is not an unprimeable number, because it can be changed into a prime (221413237) by changing a digit.

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, 107302 + ... + 109345.

It is an arithmetic number, because the mean of its divisors is an integer number (24047928).

Almost surely, 2^221413234 is an apocalyptic number.

221413234 is a deficient number, since it is larger than the sum of its proper divisors (163353614).

221413234 is a wasteful number, since it uses less digits than its factorization.

221413234 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 216729.

The product of its digits is 1152, while the sum is 22.

The square root of 221413234 is about 14879.9608198409. The cubic root of 221413234 is about 604.9709559629.

Adding to 221413234 its reverse (432314122), we get a palindrome (653727356).

The spelling of 221413234 in words is "two hundred twenty-one million, four hundred thirteen thousand, two hundred thirty-four".