212411999 has 2 divisors, whose sum is σ = 212412000. Its totient is φ = 212411998.

The previous prime is 212411993. The next prime is 212412019. The reversal of 212411999 is 999114212.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-212411999 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (212411993) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106205999 + 106206000.

It is an arithmetic number, because the mean of its divisors is an integer number (106206000).

Almost surely, 2^212411999 is an apocalyptic number.

212411999 is a deficient number, since it is larger than the sum of its proper divisors (1).

212411999 is an equidigital number, since it uses as much as digits as its factorization.

212411999 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 11664, while the sum is 38.

The square root of 212411999 is about 14574.3610151526. The cubic root of 212411999 is about 596.6592099120.

The spelling of 212411999 in words is "two hundred twelve million, four hundred eleven thousand, nine hundred ninety-nine".