213119999 has 4 divisors (see below), whose sum is σ = 215230200. Its totient is φ = 211009800.

The previous prime is 213119993. The next prime is 213120029. The reversal of 213119999 is 999911312.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 213119999 - 2¹⁶ = 213054463 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213119993) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1054949 + ... + 1055150.

It is an arithmetic number, because the mean of its divisors is an integer number (53807550).

Almost surely, 2^213119999 is an apocalyptic number.

213119999 is a deficient number, since it is larger than the sum of its proper divisors (2110201).

213119999 is a wasteful number, since it uses less digits than its factorization.

213119999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2110200.

The product of its digits is 39366, while the sum is 44.

The square root of 213119999 is about 14598.6300384659. The cubic root of 213119999 is about 597.3213919677.

The spelling of 213119999 in words is "two hundred thirteen million, one hundred nineteen thousand, nine hundred ninety-nine".