212105056111 has 8 divisors (see below), whose sum is σ = 230775684944. Its totient is φ = 193770835200.

The previous prime is 212105056081. The next prime is 212105056129. The reversal of 212105056111 is 111650501212.

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 212105056111 - 2³⁷ = 74666102639 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 (212105056711) 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, 84100665 + ... + 84103186.

It is an arithmetic number, because the mean of its divisors is an integer number (28846960618).

Almost surely, 2^212105056111 is an apocalyptic number.

212105056111 is a deficient number, since it is larger than the sum of its proper divisors (18670628833).

212105056111 is a wasteful number, since it uses less digits than its factorization.

212105056111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 168203961.

The product of its (nonzero) digits is 600, while the sum is 25.

Adding to 212105056111 its reverse (111650501212), we get a palindrome (323755557323).

The spelling of 212105056111 in words is "two hundred twelve billion, one hundred five million, fifty-six thousand, one hundred eleven".