213299111 has 4 divisors (see below), whose sum is σ = 224525400. Its totient is φ = 202072824.

The previous prime is 213299087. The next prime is 213299137. The reversal of 213299111 is 111992312.

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 213299111 - 2¹⁰ = 213298087 is a prime.

It is a super-4 number, since 4×213299111⁴ (a number of 34 digits) contains 4444 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213299011) 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, 5613116 + ... + 5613153.

It is an arithmetic number, because the mean of its divisors is an integer number (56131350).

Almost surely, 2^213299111 is an apocalyptic number.

213299111 is a deficient number, since it is larger than the sum of its proper divisors (11226289).

213299111 is a wasteful number, since it uses less digits than its factorization.

213299111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11226288.

The product of its digits is 972, while the sum is 29.

The square root of 213299111 is about 14604.7632983215. The cubic root of 213299111 is about 597.4886803058.

The spelling of 213299111 in words is "two hundred thirteen million, two hundred ninety-nine thousand, one hundred eleven".