212223719 has 2 divisors, whose sum is σ = 212223720. Its totient is φ = 212223718.

The previous prime is 212223707. The next prime is 212223721. The reversal of 212223719 is 917322212.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-212223719 is a prime.

It is a super-2 number, since 2×212223719² = 90077813812381922, which contains 22 as substring.

Together with 212223721, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 212223691 and 212223700.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (212220719) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106111859 + 106111860.

It is an arithmetic number, because the mean of its divisors is an integer number (106111860).

Almost surely, 2^212223719 is an apocalyptic number.

212223719 is a deficient number, since it is larger than the sum of its proper divisors (1).

212223719 is an equidigital number, since it uses as much as digits as its factorization.

212223719 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3024, while the sum is 29.

The square root of 212223719 is about 14567.9002948263. The cubic root of 212223719 is about 596.4828667597.

The spelling of 212223719 in words is "two hundred twelve million, two hundred twenty-three thousand, seven hundred nineteen".