212111110000111 has 8 divisors (see below), whose sum is σ = 242542956533024. Its totient is φ = 181711828314720.

The previous prime is 212111110000007. The next prime is 212111110000121. The reversal of 212111110000111 is 111000011111212.

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-212111110000111 is a prime.

It is a super-2 number, since 2×212111110000111² (a number of 29 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 212111110000091 and 212111110000100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212111110000121) 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, 8141197920 + ... + 8141223973.

It is an arithmetic number, because the mean of its divisors is an integer number (30317869566628).

Almost surely, 2^{212111110000111} is an apocalyptic number.

212111110000111 is a deficient number, since it is larger than the sum of its proper divisors (30431846532913).

212111110000111 is a wasteful number, since it uses less digits than its factorization.

212111110000111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16282423761.

The product of its (nonzero) digits is 4, while the sum is 13.

Adding to 212111110000111 its reverse (111000011111212), we get a palindrome (323111121111323).

The spelling of 212111110000111 in words is "two hundred twelve trillion, one hundred eleven billion, one hundred ten million, one hundred eleven", and thus it is an aban number.