222168543 has 4 divisors (see below), whose sum is σ = 296224728. Its totient is φ = 148112360.

The previous prime is 222168517. The next prime is 222168547. The reversal of 222168543 is 345861222.

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 222168543 - 2¹⁴ = 222152159 is a prime.

It is a super-2 number, since 2×222168543² = 98717722997485698, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222168547) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 37028088 + ... + 37028093.

It is an arithmetic number, because the mean of its divisors is an integer number (74056182).

Almost surely, 2^222168543 is an apocalyptic number.

222168543 is a deficient number, since it is larger than the sum of its proper divisors (74056185).

222168543 is an equidigital number, since it uses as much as digits as its factorization.

222168543 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74056184.

The product of its digits is 23040, while the sum is 33.

The square root of 222168543 is about 14905.3192854095. The cubic root of 222168543 is about 605.6580895398.

The spelling of 222168543 in words is "two hundred twenty-two million, one hundred sixty-eight thousand, five hundred forty-three".