212021121203 has 16 divisors (see below), whose sum is σ = 226089385056.
Its totient is φ = 198135275520.
The previous prime is 212021121199. The next prime is 212021121227. The reversal of 212021121203 is 302121120212.
212021121203 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 212021121203 - 22 = 212021121199 is a prime.
It is a Harshad number since it is a multiple of its sum of digits (17).
It is a Duffinian number.
It is not an unprimeable number, because it can be changed into a prime (212021141203) 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, 1273475 + ... + 1430307.
It is an arithmetic number, because the mean of its divisors is an integer number (14130586566).
Almost surely, 2212021121203 is an apocalyptic number.
212021121203 is a deficient number, since it is larger than the sum of its proper divisors (14068263853).
212021121203 is a wasteful number, since it uses less digits than its factorization.
212021121203 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 157414.
The product of its (nonzero) digits is 96, while the sum is 17.
Adding to 212021121203 its reverse (302121120212), we get a palindrome (514142241415).
Subtracting 212021121203 from its reverse (302121120212), we obtain a palindrome (90099999009).
The spelling of 212021121203 in words is "two hundred twelve billion, twenty-one million, one hundred twenty-one thousand, two hundred three".