110111111120021 has 8 divisors (see below), whose sum is σ = 120121291890144. Its totient is φ = 100100943643120.

The previous prime is 110111111119991. The next prime is 110111111120033. The reversal of 110111111120021 is 120021111111011.

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 110111111120021 - 2⁶ = 110111111119957 is a prime.

It is a super-2 number, since 2×110111111120021² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 110111111119978 and 110111111120005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (110111111140021) 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, 23199530 + ... + 27539796.

It is an arithmetic number, because the mean of its divisors is an integer number (15015161486268).

Almost surely, 2^{110111111120021} is an apocalyptic number.

110111111120021 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

110111111120021 is a deficient number, since it is larger than the sum of its proper divisors (10010180770123).

110111111120021 is a wasteful number, since it uses less digits than its factorization.

110111111120021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6646611.

The product of its (nonzero) digits is 4, while the sum is 14.

Adding to 110111111120021 its reverse (120021111111011), we get a palindrome (230132222231032).

The spelling of 110111111120021 in words is "one hundred ten trillion, one hundred eleven billion, one hundred eleven million, one hundred twenty thousand, twenty-one".