212123121233 has 8 divisors (see below), whose sum is σ = 212819050080. Its totient is φ = 211428226240.

The previous prime is 212123121227. The next prime is 212123121251. The reversal of 212123121233 is 332121321212.

212123121233 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 212123121233 - 2¹² = 212123117137 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 212123121199 and 212123121208.

It is not an unprimeable number, because it can be changed into a prime (212123121283) 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 7 ways as a sum of consecutive naturals, for example, 153638 + ... + 669216.

It is an arithmetic number, because the mean of its divisors is an integer number (26602381260).

Almost surely, 2^212123121233 is an apocalyptic number.

It is an amenable number.

212123121233 is a deficient number, since it is larger than the sum of its proper divisors (695928847).

212123121233 is an equidigital number, since it uses as much as digits as its factorization.

212123121233 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 516927.

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

Adding to 212123121233 its reverse (332121321212), we get a palindrome (544244442445).

The spelling of 212123121233 in words is "two hundred twelve billion, one hundred twenty-three million, one hundred twenty-one thousand, two hundred thirty-three".