11544462121 has 2 divisors, whose sum is σ = 11544462122. Its totient is φ = 11544462120.

The previous prime is 11544462113. The next prime is 11544462157. The reversal of 11544462121 is 12126444511.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7808196496 + 3736265625 = 88364^2 + 61125^2 .

It is a cyclic number.

It is not a de Polignac number, because 11544462121 - 2³ = 11544462113 is a prime.

It is not a weakly prime, because it can be changed into another prime (11544462101) 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, 5772231060 + 5772231061.

It is an arithmetic number, because the mean of its divisors is an integer number (5772231061).

Almost surely, 2^11544462121 is an apocalyptic number.

It is an amenable number.

11544462121 is a deficient number, since it is larger than the sum of its proper divisors (1).

11544462121 is an equidigital number, since it uses as much as digits as its factorization.

11544462121 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7680, while the sum is 31.

The spelling of 11544462121 in words is "eleven billion, five hundred forty-four million, four hundred sixty-two thousand, one hundred twenty-one".