111120120021 has 8 divisors (see below), whose sum is σ = 149291154144. Its totient is φ = 73514582960.

The previous prime is 111120120017. The next prime is 111120120043. The reversal of 111120120021 is 120021021111.

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 111120120021 - 2² = 111120120017 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 111120119979 and 111120120006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111120120061) 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, 141373806 + ... + 141374591.

It is an arithmetic number, because the mean of its divisors is an integer number (18661394268).

Almost surely, 2^111120120021 is an apocalyptic number.

It is an amenable number.

111120120021 is a deficient number, since it is larger than the sum of its proper divisors (38171034123).

111120120021 is a wasteful number, since it uses less digits than its factorization.

111120120021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 282748531.

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 111120120021 its reverse (120021021111), we get a palindrome (231141141132).

The spelling of 111120120021 in words is "one hundred eleven billion, one hundred twenty million, one hundred twenty thousand, twenty-one".