22222440343 has 4 divisors (see below), whose sum is σ = 22526857408. Its totient is φ = 21918023280.

The previous prime is 22222440283. The next prime is 22222440347. The reversal of 22222440343 is 34304422222.

It is a happy number.

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 22222440343 - 2²⁹ = 21685569431 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22222440347) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 152208423 + ... + 152208568.

It is an arithmetic number, because the mean of its divisors is an integer number (5631714352).

Almost surely, 2^22222440343 is an apocalyptic number.

22222440343 is a deficient number, since it is larger than the sum of its proper divisors (304417065).

22222440343 is an equidigital number, since it uses as much as digits as its factorization.

22222440343 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 304417064.

The product of its (nonzero) digits is 18432, while the sum is 28.

Adding to 22222440343 its reverse (34304422222), we get a palindrome (56526862565).

The spelling of 22222440343 in words is "twenty-two billion, two hundred twenty-two million, four hundred forty thousand, three hundred forty-three".