111120002000021 has 8 divisors (see below), whose sum is σ = 127134303760320. Its totient is φ = 95140704179808.

The previous prime is 111120001999999. The next prime is 111120002000047. The reversal of 111120002000021 is 120000200021111.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-111120002000021 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 111120001999966 and 111120002000011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111120002000321) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8750978216 + ... + 8750990913.

It is an arithmetic number, because the mean of its divisors is an integer number (15891787970040).

Almost surely, 2^{111120002000021} is an apocalyptic number.

It is an amenable number.

111120002000021 is a deficient number, since it is larger than the sum of its proper divisors (16014301760299).

111120002000021 is an equidigital number, since it uses as much as digits as its factorization.

111120002000021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17501970043.

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 111120002000021 its reverse (120000200021111), we get a palindrome (231120202021132).

The spelling of 111120002000021 in words is "one hundred eleven trillion, one hundred twenty billion, two million, twenty-one", and thus it is an aban number.