11253402521 has 2 divisors, whose sum is σ = 11253402522. Its totient is φ = 11253402520.

The previous prime is 11253402493. The next prime is 11253402557. The reversal of 11253402521 is 12520435211.

11253402521 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8787187600 + 2466214921 = 93740^2 + 49661^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11253402521 is a prime.

It is not a weakly prime, because it can be changed into another prime (11253402571) 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, 5626701260 + 5626701261.

It is an arithmetic number, because the mean of its divisors is an integer number (5626701261).

Almost surely, 2^11253402521 is an apocalyptic number.

It is an amenable number.

11253402521 is a deficient number, since it is larger than the sum of its proper divisors (1).

11253402521 is an equidigital number, since it uses as much as digits as its factorization.

11253402521 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2400, while the sum is 26.

Adding to 11253402521 its reverse (12520435211), we get a palindrome (23773837732).

The spelling of 11253402521 in words is "eleven billion, two hundred fifty-three million, four hundred two thousand, five hundred twenty-one".