21120112000111 has 8 divisors (see below), whose sum is σ = 21147836708880. Its totient is φ = 21092398955712.

The previous prime is 21120112000087. The next prime is 21120112000133. The reversal of 21120112000111 is 11100021102112.

It is a happy number.

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 21120112000111 - 2⁷ = 21120111999983 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 21120112000091 and 21120112000100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21120112000711) 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, 710545 + ... + 6537973.

It is an arithmetic number, because the mean of its divisors is an integer number (2643479588610).

Almost surely, 2^{21120112000111} is an apocalyptic number.

21120112000111 is a deficient number, since it is larger than the sum of its proper divisors (27724708769).

21120112000111 is an equidigital number, since it uses as much as digits as its factorization.

21120112000111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5832185.

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 21120112000111 its reverse (11100021102112), we get a palindrome (32220133102223).

The spelling of 21120112000111 in words is "twenty-one trillion, one hundred twenty billion, one hundred twelve million, one hundred eleven", and thus it is an aban number.