212133313111 has 4 divisors (see below), whose sum is σ = 224611743312. Its totient is φ = 199654882912.

The previous prime is 212133313103. The next prime is 212133313177. The reversal of 212133313111 is 111313331212.

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 212133313111 - 2³ = 212133313103 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 (212133310111) 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, 6239215075 + ... + 6239215108.

It is an arithmetic number, because the mean of its divisors is an integer number (56152935828).

Almost surely, 2^212133313111 is an apocalyptic number.

212133313111 is a deficient number, since it is larger than the sum of its proper divisors (12478430201).

212133313111 is a wasteful number, since it uses less digits than its factorization.

212133313111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12478430200.

The product of its digits is 324, while the sum is 22.

Adding to 212133313111 its reverse (111313331212), we get a palindrome (323446644323).

The spelling of 212133313111 in words is "two hundred twelve billion, one hundred thirty-three million, three hundred thirteen thousand, one hundred eleven".