212101122220212 has 48 divisors (see below), whose sum is σ = 508901069964672. Its totient is φ = 68713708600320.

The previous prime is 212101122220187. The next prime is 212101122220243. The reversal of 212101122220212 is 212022221101212.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 819452053 + ... + 819710844.

It is an arithmetic number, because the mean of its divisors is an integer number (10602105624264).

Almost surely, 2^{212101122220212} is an apocalyptic number.

It is an amenable number.

212101122220212 is an abundant number, since it is smaller than the sum of its proper divisors (296799947744460).

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

212101122220212 is a wasteful number, since it uses less digits than its factorization.

212101122220212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1639163208 (or 1639163206 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 21.

Adding to 212101122220212 its reverse (212022221101212), we get a palindrome (424123343321424).

The spelling of 212101122220212 in words is "two hundred twelve trillion, one hundred one billion, one hundred twenty-two million, two hundred twenty thousand, two hundred twelve".