111121230121 has 8 divisors (see below), whose sum is σ = 121226551488. Its totient is φ = 101016474000.

The previous prime is 111121230089. The next prime is 111121230127. The reversal of 111121230121 is 121032121111.

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 111121230121 - 2⁵ = 111121230089 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 111121230095 and 111121230104.

It is not an unprimeable number, because it can be changed into a prime (111121230127) 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, 341476 + ... + 582106.

It is an arithmetic number, because the mean of its divisors is an integer number (15153318936).

Almost surely, 2^111121230121 is an apocalyptic number.

111121230121 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

111121230121 is a deficient number, since it is larger than the sum of its proper divisors (10105321367).

111121230121 is a wasteful number, since it uses less digits than its factorization.

111121230121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 282623.

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

Adding to 111121230121 its reverse (121032121111), we get a palindrome (232153351232).

The spelling of 111121230121 in words is "one hundred eleven billion, one hundred twenty-one million, two hundred thirty thousand, one hundred twenty-one".