211120111101 has 4 divisors (see below), whose sum is σ = 281493481472. Its totient is φ = 140746740732.

The previous prime is 211120111093. The next prime is 211120111159. The reversal of 211120111101 is 101111021112.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 211120111101 - 2³ = 211120111093 is a prime.

It is a super-2 number, since 2×211120111101² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211120111201) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 35186685181 + ... + 35186685186.

It is an arithmetic number, because the mean of its divisors is an integer number (70373370368).

Almost surely, 2^211120111101 is an apocalyptic number.

It is an amenable number.

211120111101 is a deficient number, since it is larger than the sum of its proper divisors (70373370371).

211120111101 is an equidigital number, since it uses as much as digits as its factorization.

211120111101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70373370370.

The product of its (nonzero) digits is 4, while the sum is 12.

Adding to 211120111101 its reverse (101111021112), we get a palindrome (312231132213).

The spelling of 211120111101 in words is "two hundred eleven billion, one hundred twenty million, one hundred eleven thousand, one hundred one".