212303111 has 8 divisors (see below), whose sum is σ = 214835664. Its totient is φ = 209779200.

The previous prime is 212303071. The next prime is 212303137. The reversal of 212303111 is 111303212.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 212303111 - 2¹⁰ = 212302087 is a prime.

It is a super-2 number, since 2×212303111² = 90145221880556642, which contains 22 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 (212303141) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 56456 + ... + 60098.

It is an arithmetic number, because the mean of its divisors is an integer number (26854458).

Almost surely, 2^212303111 is an apocalyptic number.

212303111 is a deficient number, since it is larger than the sum of its proper divisors (2532553).

212303111 is a wasteful number, since it uses less digits than its factorization.

212303111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4321.

The product of its (nonzero) digits is 36, while the sum is 14.

The square root of 212303111 is about 14570.6249351220. The cubic root of 212303111 is about 596.5572380631.

Adding to 212303111 its reverse (111303212), we get a palindrome (323606323).

The spelling of 212303111 in words is "two hundred twelve million, three hundred three thousand, one hundred eleven".