11281298521 has 2 divisors, whose sum is σ = 11281298522. Its totient is φ = 11281298520.

The previous prime is 11281298503. The next prime is 11281298527. The reversal of 11281298521 is 12589218211.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10539280921 + 742017600 = 102661^2 + 27240^2 .

It is a cyclic number.

It is not a de Polignac number, because 11281298521 - 2¹³ = 11281290329 is a prime.

It is not a weakly prime, because it can be changed into another prime (11281298527) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5640649260 + 5640649261.

It is an arithmetic number, because the mean of its divisors is an integer number (5640649261).

Almost surely, 2^11281298521 is an apocalyptic number.

It is an amenable number.

11281298521 is a deficient number, since it is larger than the sum of its proper divisors (1).

11281298521 is an equidigital number, since it uses as much as digits as its factorization.

11281298521 is an evil number, because the sum of its binary digits is even.

The product of its digits is 23040, while the sum is 40.

The spelling of 11281298521 in words is "eleven billion, two hundred eighty-one million, two hundred ninety-eight thousand, five hundred twenty-one".