212221222043 has 2 divisors, whose sum is σ = 212221222044. Its totient is φ = 212221222042.

The previous prime is 212221222027. The next prime is 212221222069. The reversal of 212221222043 is 340222122212.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 212221222043 - 2⁴ = 212221222027 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (212221222093) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106110611021 + 106110611022.

It is an arithmetic number, because the mean of its divisors is an integer number (106110611022).

Almost surely, 2^212221222043 is an apocalyptic number.

212221222043 is a deficient number, since it is larger than the sum of its proper divisors (1).

212221222043 is an equidigital number, since it uses as much as digits as its factorization.

212221222043 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1536, while the sum is 23.

Adding to 212221222043 its reverse (340222122212), we get a palindrome (552443344255).

The spelling of 212221222043 in words is "two hundred twelve billion, two hundred twenty-one million, two hundred twenty-two thousand, forty-three".