111120121 has 8 divisors (see below), whose sum is σ = 127058624. Its totient is φ = 95197680.

The previous prime is 111120091. The next prime is 111120133. The reversal of 111120121 is 121021111.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-111120121 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 111120098 and 111120107.

It is not an unprimeable number, because it can be changed into a prime (111120181) 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, 22546 + ... + 27028.

It is an arithmetic number, because the mean of its divisors is an integer number (15882328).

Almost surely, 2^111120121 is an apocalyptic number.

It is an amenable number.

111120121 is a deficient number, since it is larger than the sum of its proper divisors (15938503).

111120121 is an equidigital number, since it uses as much as digits as its factorization.

111120121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8031.

The product of its (nonzero) digits is 4, while the sum is 10.

The square root of 111120121 is about 10541.3529017864. The cubic root of 111120121 is about 480.7628509263.

Adding to 111120121 its reverse (121021111), we get a palindrome (232141232).

The spelling of 111120121 in words is "one hundred eleven million, one hundred twenty thousand, one hundred twenty-one".