212021120023 has 16 divisors (see below), whose sum is σ = 228342758400.
Its totient is φ = 196247469600.
The previous prime is 212021120021. The next prime is 212021120093. The reversal of 212021120023 is 320021120212.
It is a happy number.
212021120023 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.
It is a cyclic number.
It is not a de Polignac number, because 212021120023 - 21 = 212021120021 is a prime.
It is a Duffinian number.
It is a junction number, because it is equal to n+sod(n) for n = 212021119979 and 212021120006.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (212021120021) 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 15 ways as a sum of consecutive naturals, for example, 199803 + ... + 681148.
It is an arithmetic number, because the mean of its divisors is an integer number (14271422400).
Almost surely, 2212021120023 is an apocalyptic number.
212021120023 is a deficient number, since it is larger than the sum of its proper divisors (16321638377).
212021120023 is a wasteful number, since it uses less digits than its factorization.
212021120023 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 881262.
The product of its (nonzero) digits is 96, while the sum is 16.
Adding to 212021120023 its reverse (320021120212), we get a palindrome (532042240235).
The spelling of 212021120023 in words is "two hundred twelve billion, twenty-one million, one hundred twenty thousand, twenty-three".