220400042243 has 2 divisors, whose sum is σ = 220400042244. Its totient is φ = 220400042242.

The previous prime is 220400042231. The next prime is 220400042257. The reversal of 220400042243 is 342240004022.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 220400042243 - 2⁴ = 220400042227 is a prime.

It is not a weakly prime, because it can be changed into another prime (220400012243) 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 as a sum of consecutive naturals, namely, 110200021121 + 110200021122.

It is an arithmetic number, because the mean of its divisors is an integer number (110200021122).

Almost surely, 2^220400042243 is an apocalyptic number.

220400042243 is a deficient number, since it is larger than the sum of its proper divisors (1).

220400042243 is an equidigital number, since it uses as much as digits as its factorization.

220400042243 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3072, while the sum is 23.

Adding to 220400042243 its reverse (342240004022), we get a palindrome (562640046265).

The spelling of 220400042243 in words is "two hundred twenty billion, four hundred million, forty-two thousand, two hundred forty-three".