11520221344001 has 4 divisors (see below), whose sum is σ = 11520464685504. Its totient is φ = 11519978002500.

The previous prime is 11520221343923. The next prime is 11520221344013. The reversal of 11520221344001 is 10044312202511.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 11520221344001 - 2¹⁰ = 11520221342977 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11520220344001) 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 3 ways as a sum of consecutive naturals, for example, 121599725 + ... + 121694426.

It is an arithmetic number, because the mean of its divisors is an integer number (2880116171376).

Almost surely, 2^{11520221344001} is an apocalyptic number.

It is an amenable number.

11520221344001 is a deficient number, since it is larger than the sum of its proper divisors (243341503).

11520221344001 is an equidigital number, since it uses as much as digits as its factorization.

11520221344001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 243341502.

The product of its (nonzero) digits is 1920, while the sum is 26.

Adding to 11520221344001 its reverse (10044312202511), we get a palindrome (21564533546512).

The spelling of 11520221344001 in words is "eleven trillion, five hundred twenty billion, two hundred twenty-one million, three hundred forty-four thousand, one".