212120002222010 has 64 divisors (see below), whose sum is σ = 404436192867072. Its totient is φ = 79825258761216.

The previous prime is 212120002221977. The next prime is 212120002222019. The reversal of 212120002222010 is 10222200021212.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a self number, because there is not a number n which added to its sum of digits gives 212120002222010.

It is not an unprimeable number, because it can be changed into a prime (212120002222019) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 8932484957 + ... + 8932508703.

It is an arithmetic number, because the mean of its divisors is an integer number (6319315513548).

Almost surely, 2^{212120002222010} is an apocalyptic number.

212120002222010 is a deficient number, since it is larger than the sum of its proper divisors (192316190645062).

212120002222010 is a wasteful number, since it uses less digits than its factorization.

212120002222010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42407.

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 212120002222010 its reverse (10222200021212), we get a palindrome (222342202243222).

The spelling of 212120002222010 in words is "two hundred twelve trillion, one hundred twenty billion, two million, two hundred twenty-two thousand, ten".