212813650111 has 4 divisors (see below), whose sum is σ = 213369299712. Its totient is φ = 212258000512.

The previous prime is 212813650109. The next prime is 212813650139. The reversal of 212813650111 is 111056318212.

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 212813650111 - 2¹ = 212813650109 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 (212813654111) 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, 277824226 + ... + 277824991.

It is an arithmetic number, because the mean of its divisors is an integer number (53342324928).

Almost surely, 2^212813650111 is an apocalyptic number.

212813650111 is a deficient number, since it is larger than the sum of its proper divisors (555649601).

212813650111 is an equidigital number, since it uses as much as digits as its factorization.

212813650111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 555649600.

The product of its (nonzero) digits is 2880, while the sum is 31.

Adding to 212813650111 its reverse (111056318212), we get a palindrome (323869968323).

The spelling of 212813650111 in words is "two hundred twelve billion, eight hundred thirteen million, six hundred fifty thousand, one hundred eleven".