11204523521 has 2 divisors, whose sum is σ = 11204523522. Its totient is φ = 11204523520.

The previous prime is 11204523503. The next prime is 11204523527. The reversal of 11204523521 is 12532540211.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10816000000 + 388523521 = 104000^2 + 19711^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11204523521 is a prime.

It is not a weakly prime, because it can be changed into another prime (11204523527) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5602261760 + 5602261761.

It is an arithmetic number, because the mean of its divisors is an integer number (5602261761).

Almost surely, 2^11204523521 is an apocalyptic number.

It is an amenable number.

11204523521 is a deficient number, since it is larger than the sum of its proper divisors (1).

11204523521 is an equidigital number, since it uses as much as digits as its factorization.

11204523521 is an evil number, because the sum of its binary digits is even.

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

The spelling of 11204523521 in words is "eleven billion, two hundred four million, five hundred twenty-three thousand, five hundred twenty-one".