111123120121 has 8 divisors (see below), whose sum is σ = 119830411904. Its totient is φ = 102438594000.

The previous prime is 111123120103. The next prime is 111123120137. The reversal of 111123120121 is 121021321111.

It is a happy number.

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 111123120121 - 2⁵ = 111123120089 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 111123120095 and 111123120104.

It is not an unprimeable number, because it can be changed into a prime (111123120181) 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, 5681271 + ... + 5700796.

It is an arithmetic number, because the mean of its divisors is an integer number (14978801488).

Almost surely, 2^111123120121 is an apocalyptic number.

It is an amenable number.

111123120121 is a deficient number, since it is larger than the sum of its proper divisors (8707291783).

111123120121 is a wasteful number, since it uses less digits than its factorization.

111123120121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11382831.

The product of its (nonzero) digits is 24, while the sum is 16.

Adding to 111123120121 its reverse (121021321111), we get a palindrome (232144441232).

The spelling of 111123120121 in words is "one hundred eleven billion, one hundred twenty-three million, one hundred twenty thousand, one hundred twenty-one".