11400240121121 has 16 divisors (see below), whose sum is σ = 11434392760320. Its totient is φ = 11366153952720.

The previous prime is 11400240121073. The next prime is 11400240121133. The reversal of 11400240121121 is 12112104200411.

It is a cyclic number.

It is not a de Polignac number, because 11400240121121 - 2¹⁸ = 11400239858977 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11400240121093 and 11400240121102.

It is not an unprimeable number, because it can be changed into a prime (11400240124121) 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 15 ways as a sum of consecutive naturals, for example, 1359270890 + ... + 1359279276.

It is an arithmetic number, because the mean of its divisors is an integer number (714649547520).

Almost surely, 2^{11400240121121} is an apocalyptic number.

It is an amenable number.

11400240121121 is a deficient number, since it is larger than the sum of its proper divisors (34152639199).

11400240121121 is a wasteful number, since it uses less digits than its factorization.

11400240121121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11884.

The product of its (nonzero) digits is 128, while the sum is 20.

Adding to 11400240121121 its reverse (12112104200411), we get a palindrome (23512344321532).

The spelling of 11400240121121 in words is "eleven trillion, four hundred billion, two hundred forty million, one hundred twenty-one thousand, one hundred twenty-one".