111110000000121 has 96 divisors (see below), whose sum is σ = 171989937100800. Its totient is φ = 68966985185280.

The previous prime is 111110000000117. The next prime is 111110000000143. The reversal of 111110000000121 is 121000000011111.

It is not a de Polignac number, because 111110000000121 - 2² = 111110000000117 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is not an unprimeable number, because it can be changed into a prime (111110000000161) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 2657540865 + ... + 2657582673.

It is an arithmetic number, because the mean of its divisors is an integer number (1791561844800).

Almost surely, 2^{111110000000121} is an apocalyptic number.

It is an amenable number.

111110000000121 is a deficient number, since it is larger than the sum of its proper divisors (60879937100679).

111110000000121 is a wasteful number, since it uses less digits than its factorization.

111110000000121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43031 (or 43028 counting only the distinct ones).

The product of its (nonzero) digits is 2, while the sum is 9.

Adding to 111110000000121 its reverse (121000000011111), we get a palindrome (232110000011232).

The spelling of 111110000000121 in words is "one hundred eleven trillion, one hundred ten billion, one hundred twenty-one", and thus it is an aban number.