11111001110121 has 16 divisors (see below), whose sum is σ = 16161749342208. Its totient is φ = 6733817907600.

The previous prime is 11111001110113. The next prime is 11111001110161. The reversal of 11111001110121 is 12101110011111.

It is not a de Polignac number, because 11111001110121 - 2³ = 11111001110113 is a prime.

It is a super-2 number, since 2×11111001110121² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 11111001110097 and 11111001110106.

It is not an unprimeable number, because it can be changed into a prime (11111001110161) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1190341 + ... + 4861986.

It is an arithmetic number, because the mean of its divisors is an integer number (1010109333888).

Almost surely, 2^{11111001110121} is an apocalyptic number.

11111001110121 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

11111001110121 is a deficient number, since it is larger than the sum of its proper divisors (5050748232087).

11111001110121 is a wasteful number, since it uses less digits than its factorization.

11111001110121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6107972.

The product of its (nonzero) digits is 2, while the sum is 12.

Adding to 11111001110121 its reverse (12101110011111), we get a palindrome (23212111121232).

The spelling of 11111001110121 in words is "eleven trillion, one hundred eleven billion, one million, one hundred ten thousand, one hundred twenty-one".