212112101111 has 8 divisors (see below), whose sum is σ = 214105214400. Its totient is φ = 210119844960.

The previous prime is 212112101053. The next prime is 212112101119. The reversal of 212112101111 is 111101211212.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-212112101111 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212112101119) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 288485 + ... + 712353.

It is an arithmetic number, because the mean of its divisors is an integer number (26763151800).

Almost surely, 2^212112101111 is an apocalyptic number.

212112101111 is a deficient number, since it is larger than the sum of its proper divisors (1993113289).

212112101111 is a wasteful number, since it uses less digits than its factorization.

212112101111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 428569.

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

Adding to 212112101111 its reverse (111101211212), we get a palindrome (323213312323).

The spelling of 212112101111 in words is "two hundred twelve billion, one hundred twelve million, one hundred one thousand, one hundred eleven".