212021120033 has 4 divisors (see below), whose sum is σ = 212043212868.
Its totient is φ = 211999027200.
The previous prime is 212021120021. The next prime is 212021120093. The reversal of 212021120033 is 330021120212.
It is a semiprime because it is the product of two primes.
It can be written as a sum of positive squares in 2 ways, for example, as 166046470144 + 45974649889 = 407488^2 + 214417^2
It is a cyclic number.
It is not a de Polignac number, because 212021120033 - 218 = 212020857889 is a prime.
It is a Duffinian number.
It is a junction number, because it is equal to n+sod(n) for n = 212021119993 and 212021120020.
It is not an unprimeable number, because it can be changed into a prime (212021120093) 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 3 ways as a sum of consecutive naturals, for example, 11032016 + ... + 11051217.
It is an arithmetic number, because the mean of its divisors is an integer number (53010803217).
Almost surely, 2212021120033 is an apocalyptic number.
It is an amenable number.
212021120033 is a deficient number, since it is larger than the sum of its proper divisors (22092835).
212021120033 is an equidigital number, since it uses as much as digits as its factorization.
212021120033 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 22092834.
The product of its (nonzero) digits is 144, while the sum is 17.
Adding to 212021120033 its reverse (330021120212), we get a palindrome (542042240245).
The spelling of 212021120033 in words is "two hundred twelve billion, twenty-one million, one hundred twenty thousand, thirty-three".