221232120113111 has 2 divisors, whose sum is σ = 221232120113112. Its totient is φ = 221232120113110.

The previous prime is 221232120113063. The next prime is 221232120113167. The reversal of 221232120113111 is 111311021232122.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 221232120113111 - 2⁴² = 216834073602007 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (221232120113311) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110616060056555 + 110616060056556.

It is an arithmetic number, because the mean of its divisors is an integer number (110616060056556).

Almost surely, 2^{221232120113111} is an apocalyptic number.

221232120113111 is a deficient number, since it is larger than the sum of its proper divisors (1).

221232120113111 is an equidigital number, since it uses as much as digits as its factorization.

221232120113111 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 288, while the sum is 23.

Adding to 221232120113111 its reverse (111311021232122), we get a palindrome (332543141345233).

The spelling of 221232120113111 in words is "two hundred twenty-one trillion, two hundred thirty-two billion, one hundred twenty million, one hundred thirteen thousand, one hundred eleven".