221111343343 has 4 divisors (see below), whose sum is σ = 241212374568. Its totient is φ = 201010312120.

The previous prime is 221111343239. The next prime is 221111343359. The reversal of 221111343343 is 343343111122.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 221111343343 - 2¹⁷ = 221111212271 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221111343043) 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 3 ways as a sum of consecutive naturals, for example, 10050515596 + ... + 10050515617.

It is an arithmetic number, because the mean of its divisors is an integer number (60303093642).

Almost surely, 2^221111343343 is an apocalyptic number.

221111343343 is a deficient number, since it is larger than the sum of its proper divisors (20101031225).

221111343343 is a wasteful number, since it uses less digits than its factorization.

221111343343 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20101031224.

The product of its digits is 5184, while the sum is 28.

Adding to 221111343343 its reverse (343343111122), we get a palindrome (564454454465).

The spelling of 221111343343 in words is "two hundred twenty-one billion, one hundred eleven million, three hundred forty-three thousand, three hundred forty-three".