121011000000111 has 24 divisors (see below), whose sum is σ = 194126785017360. Its totient is φ = 74468307689568.

The previous prime is 121011000000097. The next prime is 121011000000151. The reversal of 121011000000111 is 111000000110121.

It is not a de Polignac number, because 121011000000111 - 2⁹ = 121010999999599 is a prime.

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

It is a junction number, because it is equal to n+sod(n) for n = 121011000000093 and 121011000000102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121011000000151) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 13260021736 + ... + 13260030861.

It is an arithmetic number, because the mean of its divisors is an integer number (8088616042390).

Almost surely, 2^{121011000000111} is an apocalyptic number.

121011000000111 is a deficient number, since it is larger than the sum of its proper divisors (73115785017249).

121011000000111 is a wasteful number, since it uses less digits than its factorization.

121011000000111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26520052632 (or 26520052613 counting only the distinct ones).

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

Adding to 121011000000111 its reverse (111000000110121), we get a palindrome (232011000110232).

The spelling of 121011000000111 in words is "one hundred twenty-one trillion, eleven billion, one hundred eleven", and thus it is an aban number.