212123122311233 has 4 divisors (see below), whose sum is σ = 242426425498560. Its totient is φ = 181819819123908.

The previous prime is 212123122311227. The next prime is 212123122311277. The reversal of 212123122311233 is 332113221321212.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 212123122311233 - 2¹⁸ = 212123122049089 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 212123122311196 and 212123122311205.

It is not an unprimeable number, because it can be changed into a prime (212123122311223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15151651593653 + ... + 15151651593666.

It is an arithmetic number, because the mean of its divisors is an integer number (60606606374640).

Almost surely, 2^{212123122311233} is an apocalyptic number.

It is an amenable number.

212123122311233 is a deficient number, since it is larger than the sum of its proper divisors (30303303187327).

212123122311233 is an equidigital number, since it uses as much as digits as its factorization.

212123122311233 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30303303187326.

The product of its digits is 5184, while the sum is 29.

Adding to 212123122311233 its reverse (332113221321212), we get a palindrome (544236343632445).

The spelling of 212123122311233 in words is "two hundred twelve trillion, one hundred twenty-three billion, one hundred twenty-two million, three hundred eleven thousand, two hundred thirty-three".