109999213 has 2 divisors, whose sum is σ = 109999214. Its totient is φ = 109999212.

The previous prime is 109999207. The next prime is 109999229. The reversal of 109999213 is 312999901.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 86155524 + 23843689 = 9282^2 + 4883^2 .

It is a cyclic number.

It is not a de Polignac number, because 109999213 - 2⁹ = 109998701 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 109999213.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (109999243) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 54999606 + 54999607.

It is an arithmetic number, because the mean of its divisors is an integer number (54999607).

Almost surely, 2^109999213 is an apocalyptic number.

It is an amenable number.

109999213 is a deficient number, since it is larger than the sum of its proper divisors (1).

109999213 is an equidigital number, since it uses as much as digits as its factorization.

109999213 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 39366, while the sum is 43.

The square root of 109999213 is about 10488.0509628815. The cubic root of 109999213 is about 479.1408430225.

The spelling of 109999213 in words is "one hundred nine million, nine hundred ninety-nine thousand, two hundred thirteen".