221212000043 has 2 divisors, whose sum is σ = 221212000044. Its totient is φ = 221212000042.

The previous prime is 221212000027. The next prime is 221212000129. The reversal of 221212000043 is 340000212122.

221212000043 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 221212000043 - 2⁴ = 221212000027 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 221211999985 and 221212000030.

It is not a weakly prime, because it can be changed into another prime (221212000343) 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 as a sum of consecutive naturals, namely, 110606000021 + 110606000022.

It is an arithmetic number, because the mean of its divisors is an integer number (110606000022).

Almost surely, 2^221212000043 is an apocalyptic number.

221212000043 is a deficient number, since it is larger than the sum of its proper divisors (1).

221212000043 is an equidigital number, since it uses as much as digits as its factorization.

221212000043 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 192, while the sum is 17.

Adding to 221212000043 its reverse (340000212122), we get a palindrome (561212212165).

The spelling of 221212000043 in words is "two hundred twenty-one billion, two hundred twelve million, forty-three", and thus it is an aban number.