212021112323 has 4 divisors (see below), whose sum is σ = 212066585808.
Its totient is φ = 211975638840.
The previous prime is 212021112307. The next prime is 212021112343. The reversal of 212021112323 is 323211120212.
212021112323 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.
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 212021112323 - 24 = 212021112307 is a prime.
It is a Duffinian number.
It is a junction number, because it is equal to n+sod(n) for n = 212021112295 and 212021112304.
It is not an unprimeable number, because it can be changed into a prime (212021112343) 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, 22729748 + ... + 22739073.
It is an arithmetic number, because the mean of its divisors is an integer number (53016646452).
Almost surely, 2212021112323 is an apocalyptic number.
212021112323 is a deficient number, since it is larger than the sum of its proper divisors (45473485).
212021112323 is an equidigital number, since it uses as much as digits as its factorization.
212021112323 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 45473484.
The product of its (nonzero) digits is 288, while the sum is 20.
Adding to 212021112323 its reverse (323211120212), we get a palindrome (535232232535).
The spelling of 212021112323 in words is "two hundred twelve billion, twenty-one million, one hundred twelve thousand, three hundred twenty-three".