20110111000211 has 4 divisors (see below), whose sum is σ = 20178746191632. Its totient is φ = 20041475808792.

The previous prime is 20110111000207. The next prime is 20110111000237. The reversal of 20110111000211 is 11200011101102.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 20110111000211 - 2² = 20110111000207 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20110111000192 and 20110111000201.

It is not an unprimeable number, because it can be changed into a prime (20110111000711) 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, 34317595271 + ... + 34317595856.

It is an arithmetic number, because the mean of its divisors is an integer number (5044686547908).

Almost surely, 2^{20110111000211} is an apocalyptic number.

20110111000211 is a deficient number, since it is larger than the sum of its proper divisors (68635191421).

20110111000211 is an equidigital number, since it uses as much as digits as its factorization.

20110111000211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68635191420.

The product of its (nonzero) digits is 4, while the sum is 11.

Adding to 20110111000211 its reverse (11200011101102), we get a palindrome (31310122101313).

The spelling of 20110111000211 in words is "twenty trillion, one hundred ten billion, one hundred eleven million, two hundred eleven", and thus it is an aban number.