211112021111 has 8 divisors (see below), whose sum is σ = 223534416960. Its totient is φ = 198690074368.

The previous prime is 211112021089. The next prime is 211112021123. The reversal of 211112021111 is 111120211112.

211112021111 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 211112021111 - 2⁶ = 211112021047 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 (211112021191) 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 7 ways as a sum of consecutive naturals, for example, 1613915 + ... + 1739811.

It is an arithmetic number, because the mean of its divisors is an integer number (27941802120).

Almost surely, 2^211112021111 is an apocalyptic number.

211112021111 is a deficient number, since it is larger than the sum of its proper divisors (12422395849).

211112021111 is a wasteful number, since it uses less digits than its factorization.

211112021111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 224553.

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

Adding to 211112021111 its reverse (111120211112), we get a palindrome (322232232223).

It can be divided in two parts, 2 and 11112021111, that multiplied together give a palindrome (22224042222).

The spelling of 211112021111 in words is "two hundred eleven billion, one hundred twelve million, twenty-one thousand, one hundred eleven".