211101111212 has 48 divisors (see below), whose sum is σ = 378771984864. Its totient is φ = 102916800000.

The previous prime is 211101111161. The next prime is 211101111217. The reversal of 211101111212 is 212111101112.

211101111212 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (211101111217) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 20668787 + ... + 20678997.

It is an arithmetic number, because the mean of its divisors is an integer number (7891083018).

Almost surely, 2^211101111212 is an apocalyptic number.

It is an amenable number.

211101111212 is a deficient number, since it is larger than the sum of its proper divisors (167670873652).

211101111212 is a wasteful number, since it uses less digits than its factorization.

211101111212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11090 (or 11088 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 14.

Adding to 211101111212 its reverse (212111101112), we get a palindrome (423212212324).

The spelling of 211101111212 in words is "two hundred eleven billion, one hundred one million, one hundred eleven thousand, two hundred twelve".