212345699 has 2 divisors, whose sum is σ = 212345700. Its totient is φ = 212345698.

The previous prime is 212345669. The next prime is 212345747. The reversal of 212345699 is 996543212.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 212345699 - 2¹² = 212341603 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (212345669) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106172849 + 106172850.

It is an arithmetic number, because the mean of its divisors is an integer number (106172850).

Almost surely, 2^212345699 is an apocalyptic number.

212345699 is a deficient number, since it is larger than the sum of its proper divisors (1).

212345699 is an equidigital number, since it uses as much as digits as its factorization.

212345699 is an evil number, because the sum of its binary digits is even.

The product of its digits is 116640, while the sum is 41.

The square root of 212345699 is about 14572.0862953799. The cubic root of 212345699 is about 596.5971251863.

The spelling of 212345699 in words is "two hundred twelve million, three hundred forty-five thousand, six hundred ninety-nine".