221234034011 has 2 divisors, whose sum is σ = 221234034012. Its totient is φ = 221234034010.

The previous prime is 221234034001. The next prime is 221234034031. The reversal of 221234034011 is 110430432122.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-221234034011 is a prime.

It is not a weakly prime, because it can be changed into another prime (221234034001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110617017005 + 110617017006.

It is an arithmetic number, because the mean of its divisors is an integer number (110617017006).

Almost surely, 2^221234034011 is an apocalyptic number.

221234034011 is a deficient number, since it is larger than the sum of its proper divisors (1).

221234034011 is an equidigital number, since it uses as much as digits as its factorization.

221234034011 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1152, while the sum is 23.

Adding to 221234034011 its reverse (110430432122), we get a palindrome (331664466133).

The spelling of 221234034011 in words is "two hundred twenty-one billion, two hundred thirty-four million, thirty-four thousand, eleven".