212221987343 has 2 divisors, whose sum is σ = 212221987344. Its totient is φ = 212221987342.

The previous prime is 212221987297. The next prime is 212221987357. The reversal of 212221987343 is 343789122212.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 212221987343 - 2³⁰ = 211148245519 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 212221987294 and 212221987303.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (212224987343) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106110993671 + 106110993672.

It is an arithmetic number, because the mean of its divisors is an integer number (106110993672).

Almost surely, 2^212221987343 is an apocalyptic number.

212221987343 is a deficient number, since it is larger than the sum of its proper divisors (1).

212221987343 is an equidigital number, since it uses as much as digits as its factorization.

212221987343 is an evil number, because the sum of its binary digits is even.

The product of its digits is 290304, while the sum is 44.

The spelling of 212221987343 in words is "two hundred twelve billion, two hundred twenty-one million, nine hundred eighty-seven thousand, three hundred forty-three".