221233230311 has 2 divisors, whose sum is σ = 221233230312. Its totient is φ = 221233230310.

The previous prime is 221233230307. The next prime is 221233230341. The reversal of 221233230311 is 113032332122.

221233230311 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 221233230311 - 2² = 221233230307 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (221233230341) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110616615155 + 110616615156.

It is an arithmetic number, because the mean of its divisors is an integer number (110616615156).

Almost surely, 2^221233230311 is an apocalyptic number.

221233230311 is a deficient number, since it is larger than the sum of its proper divisors (1).

221233230311 is an equidigital number, since it uses as much as digits as its factorization.

221233230311 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1296, while the sum is 23.

Adding to 221233230311 its reverse (113032332122), we get a palindrome (334265562433).

The spelling of 221233230311 in words is "two hundred twenty-one billion, two hundred thirty-three million, two hundred thirty thousand, three hundred eleven".