211210100101212 has 12 divisors (see below), whose sum is σ = 492823566902856. Its totient is φ = 70403366700400.

The previous prime is 211210100101211. The next prime is 211210100101249. The reversal of 211210100101212 is 212101001012112.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (12).

It is a junction number, because it is equal to n+sod(n) for n = 211210100101191 and 211210100101200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211210100101211) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8800420837539 + ... + 8800420837562.

It is an arithmetic number, because the mean of its divisors is an integer number (41068630575238).

Almost surely, 2^{211210100101212} is an apocalyptic number.

It is an amenable number.

211210100101212 is an abundant number, since it is smaller than the sum of its proper divisors (281613466801644).

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

211210100101212 is a wasteful number, since it uses less digits than its factorization.

211210100101212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17600841675108 (or 17600841675106 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 211210100101212 its reverse (212101001012112), we get a palindrome (423311101113324).

The spelling of 211210100101212 in words is "two hundred eleven trillion, two hundred ten billion, one hundred million, one hundred one thousand, two hundred twelve".