212222212111210 has 64 divisors (see below), whose sum is σ = 446626226592000. Its totient is φ = 72574852249536.

The previous prime is 212222212111193. The next prime is 212222212111211. The reversal of 212222212111210 is 12111212222212.

It is not an unprimeable number, because it can be changed into a prime (212222212111211) 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, 78193192 + ... + 80861731.

It is an arithmetic number, because the mean of its divisors is an integer number (6978534790500).

Almost surely, 2^{212222212111210} is an apocalyptic number.

212222212111210 is an abundant number, since it is smaller than the sum of its proper divisors (234404014480790).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

212222212111210 is a wasteful number, since it uses less digits than its factorization.

212222212111210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 159055340 (or 159055326 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 22.

Adding to 212222212111210 its reverse (12111212222212), we get a palindrome (224333424333422).

The spelling of 212222212111210 in words is "two hundred twelve trillion, two hundred twenty-two billion, two hundred twelve million, one hundred eleven thousand, two hundred ten".