11454121121 has 2 divisors, whose sum is σ = 11454121122. Its totient is φ = 11454121120.

The previous prime is 11454121099. The next prime is 11454121181. The reversal of 11454121121 is 12112145411.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9490656400 + 1963464721 = 97420^2 + 44311^2 .

It is a cyclic number.

It is not a de Polignac number, because 11454121121 - 2²⁶ = 11387012257 is a prime.

It is not a weakly prime, because it can be changed into another prime (11454121181) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5727060560 + 5727060561.

It is an arithmetic number, because the mean of its divisors is an integer number (5727060561).

Almost surely, 2^11454121121 is an apocalyptic number.

It is an amenable number.

11454121121 is a deficient number, since it is larger than the sum of its proper divisors (1).

11454121121 is an equidigital number, since it uses as much as digits as its factorization.

11454121121 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 320, while the sum is 23.

Adding to 11454121121 its reverse (12112145411), we get a palindrome (23566266532).

The spelling of 11454121121 in words is "eleven billion, four hundred fifty-four million, one hundred twenty-one thousand, one hundred twenty-one".