111111110201121 has 8 divisors (see below), whose sum is σ = 148149178471200. Its totient is φ = 74073557699232.

The previous prime is 111111110201111. The next prime is 111111110201191. The reversal of 111111110201121 is 121102011111111.

It is a happy number.

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

It is not a de Polignac number, because 111111110201121 - 2⁹ = 111111110200609 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 111111110201121.

It is not an unprimeable number, because it can be changed into a prime (111111110201111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 128439100 + ... + 129301293.

It is an arithmetic number, because the mean of its divisors is an integer number (18518647308900).

Almost surely, 2^{111111110201121} is an apocalyptic number.

It is an amenable number.

111111110201121 is a deficient number, since it is larger than the sum of its proper divisors (37038068270079).

111111110201121 is a wasteful number, since it uses less digits than its factorization.

111111110201121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 257884095.

The product of its (nonzero) digits is 4, while the sum is 15.

Adding to 111111110201121 its reverse (121102011111111), we get a palindrome (232213121312232).

The spelling of 111111110201121 in words is "one hundred eleven trillion, one hundred eleven billion, one hundred ten million, two hundred one thousand, one hundred twenty-one".