212333222111 has 4 divisors (see below), whose sum is σ = 212342926800. Its totient is φ = 212323517424.

The previous prime is 212333222099. The next prime is 212333222131. The reversal of 212333222111 is 111222333212.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-212333222111 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 (212333222131) 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, 4819451 + ... + 4863308.

It is an arithmetic number, because the mean of its divisors is an integer number (53085731700).

Almost surely, 2^212333222111 is an apocalyptic number.

212333222111 is a deficient number, since it is larger than the sum of its proper divisors (9704689).

212333222111 is an equidigital number, since it uses as much as digits as its factorization.

212333222111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9704688.

The product of its digits is 864, while the sum is 23.

Adding to 212333222111 its reverse (111222333212), we get a palindrome (323555555323).

The spelling of 212333222111 in words is "two hundred twelve billion, three hundred thirty-three million, two hundred twenty-two thousand, one hundred eleven".