212299019 has 2 divisors, whose sum is σ = 212299020. Its totient is φ = 212299018.

The previous prime is 212298979. The next prime is 212299033. The reversal of 212299019 is 910992212.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-212299019 is a prime.

It is a super-2 number, since 2×212299019² = 90141746936724722, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 212299019.

It is not a weakly prime, because it can be changed into another prime (212293019) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106149509 + 106149510.

It is an arithmetic number, because the mean of its divisors is an integer number (106149510).

Almost surely, 2^212299019 is an apocalyptic number.

212299019 is a deficient number, since it is larger than the sum of its proper divisors (1).

212299019 is an equidigital number, since it uses as much as digits as its factorization.

212299019 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5832, while the sum is 35.

The square root of 212299019 is about 14570.4845149364. The cubic root of 212299019 is about 596.5534052917.

The spelling of 212299019 in words is "two hundred twelve million, two hundred ninety-nine thousand, nineteen".