221434002243 has 24 divisors (see below), whose sum is σ = 327828717216. Its totient is φ = 143943696000.

The previous prime is 221434002239. The next prime is 221434002253. The reversal of 221434002243 is 342200434122.

221434002243 is a `hidden beast` number, since 2 + 2 + 1 + 434 + 0 + 0 + 224 + 3 = 666.

It is not a de Polignac number, because 221434002243 - 2² = 221434002239 is a prime.

It is not an unprimeable number, because it can be changed into a prime (221434002253) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 519093 + ... + 843993.

It is an arithmetic number, because the mean of its divisors is an integer number (13659529884).

Almost surely, 2^221434002243 is an apocalyptic number.

221434002243 is a deficient number, since it is larger than the sum of its proper divisors (106394714973).

221434002243 is a wasteful number, since it uses less digits than its factorization.

221434002243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 326795 (or 326792 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 27.

Adding to 221434002243 its reverse (342200434122), we get a palindrome (563634436365).

The spelling of 221434002243 in words is "two hundred twenty-one billion, four hundred thirty-four million, two thousand, two hundred forty-three".