212012311 has 8 divisors (see below), whose sum is σ = 246407040. Its totient is φ = 178644408.

The previous prime is 212012299. The next prime is 212012351. The reversal of 212012311 is 113210212.

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 212012311 - 2⁹ = 212011799 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 212012291 and 212012300.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212012351) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 256261 + ... + 257086.

It is an arithmetic number, because the mean of its divisors is an integer number (30800880).

Almost surely, 2^212012311 is an apocalyptic number.

212012311 is a deficient number, since it is larger than the sum of its proper divisors (34394729).

212012311 is an equidigital number, since it uses as much as digits as its factorization.

212012311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 513413.

The product of its (nonzero) digits is 24, while the sum is 13.

The square root of 212012311 is about 14560.6425338994. The cubic root of 212012311 is about 596.2847375625.

Adding to 212012311 its reverse (113210212), we get a palindrome (325222523).

The spelling of 212012311 in words is "two hundred twelve million, twelve thousand, three hundred eleven".