211122012111212 has 12 divisors (see below), whose sum is σ = 369465331069800. Its totient is φ = 105560488948416.

The previous prime is 211122012111211. The next prime is 211122012111223. The reversal of 211122012111212 is 212111210221112.

It is a happy number.

It is a super-3 number, since 3×211122012111212³ (a number of 44 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is not an unprimeable number, because it can be changed into a prime (211122012111211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 128357453 + ... + 129991844.

It is an arithmetic number, because the mean of its divisors is an integer number (30788777589150).

Almost surely, 2^{211122012111212} is an apocalyptic number.

It is an amenable number.

211122012111212 is a deficient number, since it is larger than the sum of its proper divisors (158343318958588).

211122012111212 is a wasteful number, since it uses less digits than its factorization.

211122012111212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 258553600 (or 258553598 counting only the distinct ones).

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

Adding to 211122012111212 its reverse (212111210221112), we get a palindrome (423233222332324).

The spelling of 211122012111212 in words is "two hundred eleven trillion, one hundred twenty-two billion, twelve million, one hundred eleven thousand, two hundred twelve".