221322130111 has 2 divisors, whose sum is σ = 221322130112. Its totient is φ = 221322130110.

The previous prime is 221322130109. The next prime is 221322130163. The reversal of 221322130111 is 111031223122.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 221322130111 - 2¹ = 221322130109 is a prime.

Together with 221322130109, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (221322130811) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110661065055 + 110661065056.

It is an arithmetic number, because the mean of its divisors is an integer number (110661065056).

Almost surely, 2^221322130111 is an apocalyptic number.

221322130111 is a deficient number, since it is larger than the sum of its proper divisors (1).

221322130111 is an equidigital number, since it uses as much as digits as its factorization.

221322130111 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 144, while the sum is 19.

Adding to 221322130111 its reverse (111031223122), we get a palindrome (332353353233).

The spelling of 221322130111 in words is "two hundred twenty-one billion, three hundred twenty-two million, one hundred thirty thousand, one hundred eleven".