212221221002 has 16 divisors (see below), whose sum is σ = 376352904960.
Its totient is φ = 87815677488.
The previous prime is 212221220971. The next prime is 212221221013. The reversal of 212221221002 is 200122122212.
It is a happy number.
212221221002 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.
It is an unprimeable number.
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, 261355778 + ... + 261356589.
It is an arithmetic number, because the mean of its divisors is an integer number (23522056560).
Almost surely, 2212221221002 is an apocalyptic number.
212221221002 is a deficient number, since it is larger than the sum of its proper divisors (164131683958).
212221221002 is a wasteful number, since it uses less digits than its factorization.
212221221002 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 522712405.
The product of its (nonzero) digits is 128, while the sum is 17.
Adding to 212221221002 its reverse (200122122212), we get a palindrome (412343343214).
The spelling of 212221221002 in words is "two hundred twelve billion, two hundred twenty-one million, two hundred twenty-one thousand, two".