221434341111 has 16 divisors (see below), whose sum is σ = 328492427520. Its totient is φ = 147424195800.

The previous prime is 221434341053. The next prime is 221434341157. The reversal of 221434341111 is 111143434122.

It is a happy number.

221434341111 is a `hidden beast` number, since 2 + 214 + 3 + 434 + 1 + 1 + 11 = 666.

It is not a de Polignac number, because 221434341111 - 2⁶ = 221434341047 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221434341911) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5498965 + ... + 5539086.

It is an arithmetic number, because the mean of its divisors is an integer number (20530776720).

Almost surely, 2^221434341111 is an apocalyptic number.

221434341111 is a deficient number, since it is larger than the sum of its proper divisors (107058086409).

221434341111 is a wasteful number, since it uses less digits than its factorization.

221434341111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11038803 (or 11038797 counting only the distinct ones).

The product of its digits is 2304, while the sum is 27.

Adding to 221434341111 its reverse (111143434122), we get a palindrome (332577775233).

The spelling of 221434341111 in words is "two hundred twenty-one billion, four hundred thirty-four million, three hundred forty-one thousand, one hundred eleven".