212101112011222 has 16 divisors (see below), whose sum is σ = 371022353373600. Its totient is φ = 90900476575944.

The previous prime is 212101112011207. The next prime is 212101112011247. The reversal of 212101112011222 is 222110211101212.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 212101112011222.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 154592646553 + ... + 154592647924.

It is an arithmetic number, because the mean of its divisors is an integer number (23188897085850).

Almost surely, 2^{212101112011222} is an apocalyptic number.

212101112011222 is a deficient number, since it is larger than the sum of its proper divisors (158921241362378).

212101112011222 is an equidigital number, since it uses as much as digits as its factorization.

212101112011222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 309185294500 (or 309185294486 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 19.

Adding to 212101112011222 its reverse (222110211101212), we get a palindrome (434211323112434).

The spelling of 212101112011222 in words is "two hundred twelve trillion, one hundred one billion, one hundred twelve million, eleven thousand, two hundred twenty-two".