212999959 has 2 divisors, whose sum is σ = 212999960. Its totient is φ = 212999958.

The previous prime is 212999957. The next prime is 213000001. The reversal of 212999959 is 959999212.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 212999959 - 2¹ = 212999957 is a prime.

Together with 212999957, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (212999957) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106499979 + 106499980.

It is an arithmetic number, because the mean of its divisors is an integer number (106499980).

Almost surely, 2^212999959 is an apocalyptic number.

212999959 is a deficient number, since it is larger than the sum of its proper divisors (1).

212999959 is an equidigital number, since it uses as much as digits as its factorization.

212999959 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1180980, while the sum is 55.

The square root of 212999959 is about 14594.5181146895. The cubic root of 212999959 is about 597.2092236640.

The spelling of 212999959 in words is "two hundred twelve million, nine hundred ninety-nine thousand, nine hundred fifty-nine".