118999213 has 2 divisors, whose sum is σ = 118999214. Its totient is φ = 118999212.

The previous prime is 118999193. The next prime is 118999219. The reversal of 118999213 is 312999811.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 85045284 + 33953929 = 9222^2 + 5827^2 .

It is an emirp because it is prime and its reverse (312999811) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 118999213 - 2¹³ = 118991021 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 118999213.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (118999219) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 59499606 + 59499607.

It is an arithmetic number, because the mean of its divisors is an integer number (59499607).

Almost surely, 2^118999213 is an apocalyptic number.

It is an amenable number.

118999213 is a deficient number, since it is larger than the sum of its proper divisors (1).

118999213 is an equidigital number, since it uses as much as digits as its factorization.

118999213 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 34992, while the sum is 43.

The square root of 118999213 is about 10908.6760424902. The cubic root of 118999213 is about 491.8673891284.

It can be divided in two parts, 11899 and 9213, that added together give a palindrome (21112).

The spelling of 118999213 in words is "one hundred eighteen million, nine hundred ninety-nine thousand, two hundred thirteen".