221434331234 has 32 divisors (see below), whose sum is σ = 353343144000. Its totient is φ = 103779693504.

The previous prime is 221434331231. The next prime is 221434331243. The reversal of 221434331234 is 432133434122.

221434331234 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 221434331234.

It is not an unprimeable number, because it can be changed into a prime (221434331231) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2898977 + ... + 2974379.

It is an arithmetic number, because the mean of its divisors is an integer number (11041973250).

Almost surely, 2^221434331234 is an apocalyptic number.

221434331234 is a deficient number, since it is larger than the sum of its proper divisors (131908812766).

221434331234 is a wasteful number, since it uses less digits than its factorization.

221434331234 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76242.

The product of its digits is 41472, while the sum is 32.

Adding to 221434331234 its reverse (432133434122), we get a palindrome (653567765356).

The spelling of 221434331234 in words is "two hundred twenty-one billion, four hundred thirty-four million, three hundred thirty-one thousand, two hundred thirty-four".