11155002281 has 2 divisors, whose sum is σ = 11155002282. Its totient is φ = 11155002280.

The previous prime is 11155002253. The next prime is 11155002293. The reversal of 11155002281 is 18220055111.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9945075625 + 1209926656 = 99725^2 + 34784^2 .

It is a cyclic number.

It is not a de Polignac number, because 11155002281 - 2²⁶ = 11087893417 is a prime.

It is a super-2 number, since 2×11155002281² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 11155002281.

It is not a weakly prime, because it can be changed into another prime (11155002181) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5577501140 + 5577501141.

It is an arithmetic number, because the mean of its divisors is an integer number (5577501141).

Almost surely, 2^11155002281 is an apocalyptic number.

It is an amenable number.

11155002281 is a deficient number, since it is larger than the sum of its proper divisors (1).

11155002281 is an equidigital number, since it uses as much as digits as its factorization.

11155002281 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 800, while the sum is 26.

Adding to 11155002281 its reverse (18220055111), we get a palindrome (29375057392).

The spelling of 11155002281 in words is "eleven billion, one hundred fifty-five million, two thousand, two hundred eighty-one".