212044913 has 2 divisors, whose sum is σ = 212044914. Its totient is φ = 212044912.

The previous prime is 212044909. The next prime is 212044919. The reversal of 212044913 is 319440212.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 198443569 + 13601344 = 14087^2 + 3688^2 .

It is a cyclic number.

It is not a de Polignac number, because 212044913 - 2² = 212044909 is a prime.

It is not a weakly prime, because it can be changed into another prime (212044919) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106022456 + 106022457.

It is an arithmetic number, because the mean of its divisors is an integer number (106022457).

Almost surely, 2^212044913 is an apocalyptic number.

It is an amenable number.

212044913 is a deficient number, since it is larger than the sum of its proper divisors (1).

212044913 is an equidigital number, since it uses as much as digits as its factorization.

212044913 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1728, while the sum is 26.

The square root of 212044913 is about 14561.7620156353. The cubic root of 212044913 is about 596.3153003767.

The spelling of 212044913 in words is "two hundred twelve million, forty-four thousand, nine hundred thirteen".