12111001001121 has 32 divisors (see below), whose sum is σ = 17717250934656. Its totient is φ = 7297831296000.

The previous prime is 12111001001111. The next prime is 12111001001123. The reversal of 12111001001121 is 12110010011121.

It is not a de Polignac number, because 12111001001121 - 2¹⁷ = 12111000870049 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 12111001001097 and 12111001001106.

It is not an unprimeable number, because it can be changed into a prime (12111001001123) 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 31 ways as a sum of consecutive naturals, for example, 27020575 + ... + 27465131.

It is an arithmetic number, because the mean of its divisors is an integer number (553664091708).

Almost surely, 2^{12111001001121} is an apocalyptic number.

12111001001121 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

12111001001121 is a deficient number, since it is larger than the sum of its proper divisors (5606249933535).

12111001001121 is a wasteful number, since it uses less digits than its factorization.

12111001001121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 449313.

The product of its (nonzero) digits is 4, while the sum is 12.

Adding to 12111001001121 its reverse (12110010011121), we get a palindrome (24221011012242).

The spelling of 12111001001121 in words is "twelve trillion, one hundred eleven billion, one million, one thousand, one hundred twenty-one".