211101121111 has 8 divisors (see below), whose sum is σ = 211793021424. Its totient is φ = 210410044800.

The previous prime is 211101121103. The next prime is 211101121163. The reversal of 211101121111 is 111121101112.

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 211101121111 - 2³ = 211101121103 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 211101121091 and 211101121100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211101121181) 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, 309325 + ... + 719641.

It is an arithmetic number, because the mean of its divisors is an integer number (26474127678).

Almost surely, 2^211101121111 is an apocalyptic number.

211101121111 is a deficient number, since it is larger than the sum of its proper divisors (691900313).

211101121111 is a wasteful number, since it uses less digits than its factorization.

211101121111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 412001.

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

Adding to 211101121111 its reverse (111121101112), we get a palindrome (322222222223).

The spelling of 211101121111 in words is "two hundred eleven billion, one hundred one million, one hundred twenty-one thousand, one hundred eleven".