221120134343 has 4 divisors (see below), whose sum is σ = 222528543000. Its totient is φ = 219711725688.

The previous prime is 221120134337. The next prime is 221120134357. The reversal of 221120134343 is 343431021122.

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 221120134343 - 2¹⁸ = 221119872199 is a prime.

It is a super-2 number, since 2×221120134343² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221120134243) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 704204093 + ... + 704204406.

It is an arithmetic number, because the mean of its divisors is an integer number (55632135750).

Almost surely, 2^221120134343 is an apocalyptic number.

221120134343 is a deficient number, since it is larger than the sum of its proper divisors (1408408657).

221120134343 is a wasteful number, since it uses less digits than its factorization.

221120134343 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1408408656.

The product of its (nonzero) digits is 3456, while the sum is 26.

Adding to 221120134343 its reverse (343431021122), we get a palindrome (564551155465).

The spelling of 221120134343 in words is "two hundred twenty-one billion, one hundred twenty million, one hundred thirty-four thousand, three hundred forty-three".