111120200021 has 8 divisors (see below), whose sum is σ = 113900739288. Its totient is φ = 108343008000.

The previous prime is 111120199999. The next prime is 111120200027. The reversal of 111120200021 is 120002021111.

It can be written as a sum of positive squares in 4 ways, for example, as 28733979121 + 82386220900 = 169511^2 + 287030^2 .

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 111120200021 - 2²⁶ = 111053091157 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 111120199975 and 111120200011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111120200027) 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, 769520 + ... + 902441.

It is an arithmetic number, because the mean of its divisors is an integer number (14237592411).

Almost surely, 2^111120200021 is an apocalyptic number.

It is an amenable number.

111120200021 is a deficient number, since it is larger than the sum of its proper divisors (2780539267).

111120200021 is a wasteful number, since it uses less digits than its factorization.

111120200021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1673623.

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

Adding to 111120200021 its reverse (120002021111), we get a palindrome (231122221132).

The spelling of 111120200021 in words is "one hundred eleven billion, one hundred twenty million, two hundred thousand, twenty-one".