221234034347 has 2 divisors, whose sum is σ = 221234034348. Its totient is φ = 221234034346.

The previous prime is 221234034299. The next prime is 221234034379. The reversal of 221234034347 is 743430432122.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 221234034347 - 2¹⁶ = 221233968811 is a prime.

It is not a weakly prime, because it can be changed into another prime (221234034397) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110617017173 + 110617017174.

It is an arithmetic number, because the mean of its divisors is an integer number (110617017174).

Almost surely, 2^221234034347 is an apocalyptic number.

221234034347 is a deficient number, since it is larger than the sum of its proper divisors (1).

221234034347 is an equidigital number, since it uses as much as digits as its factorization.

221234034347 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 96768, while the sum is 35.

Adding to 221234034347 its reverse (743430432122), we get a palindrome (964664466469).

The spelling of 221234034347 in words is "two hundred twenty-one billion, two hundred thirty-four million, thirty-four thousand, three hundred forty-seven".