2221342243 has 2 divisors, whose sum is σ = 2221342244. Its totient is φ = 2221342242.

The previous prime is 2221342223. The next prime is 2221342301. The reversal of 2221342243 is 3422431222.

2221342243 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2221342243 - 2¹³ = 2221334051 is a prime.

It is a super-2 number, since 2×2221342243² = 9868722721072542098, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (2221342223) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1110671121 + 1110671122.

It is an arithmetic number, because the mean of its divisors is an integer number (1110671122).

Almost surely, 2^2221342243 is an apocalyptic number.

2221342243 is a deficient number, since it is larger than the sum of its proper divisors (1).

2221342243 is an equidigital number, since it uses as much as digits as its factorization.

2221342243 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4608, while the sum is 25.

The square root of 2221342243 is about 47131.1175657866. The cubic root of 2221342243 is about 1304.7836075390.

Adding to 2221342243 its reverse (3422431222), we get a palindrome (5643773465).

The spelling of 2221342243 in words is "two billion, two hundred twenty-one million, three hundred forty-two thousand, two hundred forty-three".