11001120113521 has 2 divisors, whose sum is σ = 11001120113522. Its totient is φ = 11001120113520.

The previous prime is 11001120113483. The next prime is 11001120113531. The reversal of 11001120113521 is 12531102110011.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10098819602496 + 902300511025 = 3177864^2 + 949895^2 .

It is a cyclic number.

It is not a de Polignac number, because 11001120113521 - 2²⁷ = 11000985895793 is a prime.

It is not a weakly prime, because it can be changed into another prime (11001120113531) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5500560056760 + 5500560056761.

It is an arithmetic number, because the mean of its divisors is an integer number (5500560056761).

Almost surely, 2^{11001120113521} is an apocalyptic number.

It is an amenable number.

11001120113521 is a deficient number, since it is larger than the sum of its proper divisors (1).

11001120113521 is an equidigital number, since it uses as much as digits as its factorization.

11001120113521 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 60, while the sum is 19.

Adding to 11001120113521 its reverse (12531102110011), we get a palindrome (23532222223532).

The spelling of 11001120113521 in words is "eleven trillion, one billion, one hundred twenty million, one hundred thirteen thousand, five hundred twenty-one".