11351521121 has 2 divisors, whose sum is σ = 11351521122. Its totient is φ = 11351521120.

The previous prime is 11351521087. The next prime is 11351521147. The reversal of 11351521121 is 12112515311.

11351521121 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11297351521 + 54169600 = 106289^2 + 7360^2 .

It is a cyclic number.

It is not a de Polignac number, because 11351521121 - 2¹⁰ = 11351520097 is a prime.

It is not a weakly prime, because it can be changed into another prime (11351521021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5675760560 + 5675760561.

It is an arithmetic number, because the mean of its divisors is an integer number (5675760561).

Almost surely, 2^11351521121 is an apocalyptic number.

It is an amenable number.

11351521121 is a deficient number, since it is larger than the sum of its proper divisors (1).

11351521121 is an equidigital number, since it uses as much as digits as its factorization.

11351521121 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 300, while the sum is 23.

The spelling of 11351521121 in words is "eleven billion, three hundred fifty-one million, five hundred twenty-one thousand, one hundred twenty-one".