212111321233 has 16 divisors (see below), whose sum is σ = 242777756160. Its totient is φ = 181536264000.

The previous prime is 212111321209. The next prime is 212111321243. The reversal of 212111321233 is 332123111212.

It is not a de Polignac number, because 212111321233 - 2²¹ = 212109224081 is a prime.

It is a super-3 number, since 3×212111321233³ (a number of 35 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (212111321243) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20586183 + ... + 20596483.

It is an arithmetic number, because the mean of its divisors is an integer number (15173609760).

Almost surely, 2^212111321233 is an apocalyptic number.

It is an amenable number.

212111321233 is a deficient number, since it is larger than the sum of its proper divisors (30666434927).

212111321233 is a wasteful number, since it uses less digits than its factorization.

212111321233 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14448.

The product of its digits is 432, while the sum is 22.

Adding to 212111321233 its reverse (332123111212), we get a palindrome (544234432445).

The spelling of 212111321233 in words is "two hundred twelve billion, one hundred eleven million, three hundred twenty-one thousand, two hundred thirty-three".