211212102121112 has 16 divisors (see below), whose sum is σ = 397157426988000. Its totient is φ = 105303454924320.

The previous prime is 211212102121109. The next prime is 211212102121127. The reversal of 211212102121112 is 211121201212112.

It is a happy number.

It is a super-3 number, since 3×211212102121112³ (a number of 44 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 37824514064 + ... + 37824519647.

It is an arithmetic number, because the mean of its divisors is an integer number (24822339186750).

Almost surely, 2^{211212102121112} is an apocalyptic number.

It is an amenable number.

211212102121112 is a deficient number, since it is larger than the sum of its proper divisors (185945324866888).

211212102121112 is a wasteful number, since it uses less digits than its factorization.

211212102121112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75649034066 (or 75649034062 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 20.

Adding to 211212102121112 its reverse (211121201212112), we get a palindrome (422333303333224).

The spelling of 211212102121112 in words is "two hundred eleven trillion, two hundred twelve billion, one hundred two million, one hundred twenty-one thousand, one hundred twelve".