211222221212243 has 2 divisors, whose sum is σ = 211222221212244. Its totient is φ = 211222221212242.

The previous prime is 211222221212203. The next prime is 211222221212309. The reversal of 211222221212243 is 342212122222112.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 211222221212243 - 2¹⁰ = 211222221211219 is a prime.

It is a super-2 number, since 2×211222221212243² (a number of 29 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (211222221212203) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105611110606121 + 105611110606122.

It is an arithmetic number, because the mean of its divisors is an integer number (105611110606122).

Almost surely, 2^{211222221212243} is an apocalyptic number.

211222221212243 is a deficient number, since it is larger than the sum of its proper divisors (1).

211222221212243 is an equidigital number, since it uses as much as digits as its factorization.

211222221212243 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6144, while the sum is 29.

Adding to 211222221212243 its reverse (342212122222112), we get a palindrome (553434343434355).

The spelling of 211222221212243 in words is "two hundred eleven trillion, two hundred twenty-two billion, two hundred twenty-one million, two hundred twelve thousand, two hundred forty-three".