212231219 has 2 divisors, whose sum is σ = 212231220. Its totient is φ = 212231218.

The previous prime is 212231207. The next prime is 212231231. The reversal of 212231219 is 912132212.

It is a happy number.

It is a balanced prime because it is at equal distance from previous prime (212231207) and next prime (212231231).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-212231219 is a prime.

It is a super-2 number, since 2×212231219² = 90084180636451922, which contains 22 as substring.

It is a nialpdrome in base 16.

It is a junction number, because it is equal to n+sod(n) for n = 212231194 and 212231203.

It is not a weakly prime, because it can be changed into another prime (212231119) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106115609 + 106115610.

It is an arithmetic number, because the mean of its divisors is an integer number (106115610).

Almost surely, 2^212231219 is an apocalyptic number.

212231219 is a deficient number, since it is larger than the sum of its proper divisors (1).

212231219 is an equidigital number, since it uses as much as digits as its factorization.

212231219 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 432, while the sum is 23.

The square root of 212231219 is about 14568.1577078229. The cubic root of 212231219 is about 596.4898932580.

The spelling of 212231219 in words is "two hundred twelve million, two hundred thirty-one thousand, two hundred nineteen".