221341430234 has 8 divisors (see below), whose sum is σ = 332865648180. Its totient is φ = 110386214176.

The previous prime is 221341430213. The next prime is 221341430267. The reversal of 221341430234 is 432034143122.

It can be written as a sum of positive squares in 2 ways, for example, as 175096218025 + 46245212209 = 418445^2 + 215047^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 221341430197 and 221341430206.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 142249499 + ... + 142251054.

Almost surely, 2^221341430234 is an apocalyptic number.

221341430234 is a deficient number, since it is larger than the sum of its proper divisors (111524217946).

221341430234 is a wasteful number, since it uses less digits than its factorization.

221341430234 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 284500944.

The product of its (nonzero) digits is 13824, while the sum is 29.

Adding to 221341430234 its reverse (432034143122), we get a palindrome (653375573356).

The spelling of 221341430234 in words is "two hundred twenty-one billion, three hundred forty-one million, four hundred thirty thousand, two hundred thirty-four".