212040919 has 2 divisors, whose sum is σ = 212040920. Its totient is φ = 212040918.

The previous prime is 212040853. The next prime is 212040929. The reversal of 212040919 is 919040212.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 212040919 - 2⁹ = 212040407 is a prime.

It is a super-2 number, since 2×212040919² = 89922702660729122, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (212040929) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106020459 + 106020460.

It is an arithmetic number, because the mean of its divisors is an integer number (106020460).

Almost surely, 2^212040919 is an apocalyptic number.

212040919 is a deficient number, since it is larger than the sum of its proper divisors (1).

212040919 is an equidigital number, since it uses as much as digits as its factorization.

212040919 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1296, while the sum is 28.

The square root of 212040919 is about 14561.6248749925. The cubic root of 212040919 is about 596.3115563613.

The spelling of 212040919 in words is "two hundred twelve million, forty thousand, nine hundred nineteen".