212101122212222 has 32 divisors (see below), whose sum is σ = 338971831255200. Its totient is φ = 99251826121728.

The previous prime is 212101122212143. The next prime is 212101122212269. The reversal of 212101122212222 is 222212221101212.

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 15 ways as a sum of consecutive naturals, for example, 74579543 + ... + 77371250.

It is an arithmetic number, because the mean of its divisors is an integer number (10592869726725).

Almost surely, 2^{212101122212222} is an apocalyptic number.

212101122212222 is a deficient number, since it is larger than the sum of its proper divisors (126870709042978).

212101122212222 is a wasteful number, since it uses less digits than its factorization.

212101122212222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 151951260.

The product of its (nonzero) digits is 512, while the sum is 23.

Adding to 212101122212222 its reverse (222212221101212), we get a palindrome (434313343313434).

The spelling of 212101122212222 in words is "two hundred twelve trillion, one hundred one billion, one hundred twenty-two million, two hundred twelve thousand, two hundred twenty-two".