212211212243 has 2 divisors, whose sum is σ = 212211212244. Its totient is φ = 212211212242.

The previous prime is 212211212207. The next prime is 212211212263. The reversal of 212211212243 is 342212112212.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 212211212243 - 2¹⁸ = 212210950099 is a prime.

It is a super-4 number, since 4×212211212243⁴ (a number of 46 digits) contains 4444 as substring.

It is not a weakly prime, because it can be changed into another prime (212211212263) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106105606121 + 106105606122.

It is an arithmetic number, because the mean of its divisors is an integer number (106105606122).

Almost surely, 2^212211212243 is an apocalyptic number.

212211212243 is a deficient number, since it is larger than the sum of its proper divisors (1).

212211212243 is an equidigital number, since it uses as much as digits as its factorization.

212211212243 is an evil number, because the sum of its binary digits is even.

The product of its digits is 768, while the sum is 23.

Adding to 212211212243 its reverse (342212112212), we get a palindrome (554423324455).

The spelling of 212211212243 in words is "two hundred twelve billion, two hundred eleven million, two hundred twelve thousand, two hundred forty-three".