111001000121 has 8 divisors (see below), whose sum is σ = 122045481984. Its totient is φ = 100115431920.

The previous prime is 111001000069. The next prime is 111001000127. The reversal of 111001000121 is 121000100111.

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 a de Polignac number, because none of the positive numbers 2^k-111001000121 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 111001000099 and 111001000108.

It is not an unprimeable number, because it can be changed into a prime (111001000127) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 39726950 + ... + 39729743.

It is an arithmetic number, because the mean of its divisors is an integer number (15255685248).

Almost surely, 2^111001000121 is an apocalyptic number.

111001000121 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

111001000121 is a deficient number, since it is larger than the sum of its proper divisors (11044481863).

111001000121 is a wasteful number, since it uses less digits than its factorization.

111001000121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79456831.

The product of its (nonzero) digits is 2, while the sum is 8.

Adding to 111001000121 its reverse (121000100111), we get a palindrome (232001100232).

The spelling of 111001000121 in words is "one hundred eleven billion, one million, one hundred twenty-one", and thus it is an aban number.