221234102311 has 2 divisors, whose sum is σ = 221234102312. Its totient is φ = 221234102310.

The previous prime is 221234102281. The next prime is 221234102351. The reversal of 221234102311 is 113201432122.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 221234102311 - 2⁵ = 221234102279 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (221234102351) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110617051155 + 110617051156.

It is an arithmetic number, because the mean of its divisors is an integer number (110617051156).

Almost surely, 2^221234102311 is an apocalyptic number.

221234102311 is a deficient number, since it is larger than the sum of its proper divisors (1).

221234102311 is an equidigital number, since it uses as much as digits as its factorization.

221234102311 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 576, while the sum is 22.

Adding to 221234102311 its reverse (113201432122), we get a palindrome (334435534433).

The spelling of 221234102311 in words is "two hundred twenty-one billion, two hundred thirty-four million, one hundred two thousand, three hundred eleven".