11000033281 has 2 divisors, whose sum is σ = 11000033282. Its totient is φ = 11000033280.

The previous prime is 11000033279. The next prime is 11000033309. The reversal of 11000033281 is 18233000011.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10875152656 + 124880625 = 104284^2 + 11175^2 .

It is a cyclic number.

It is not a de Polignac number, because 11000033281 - 2¹ = 11000033279 is a prime.

It is a super-2 number, since 2×11000033281² (a number of 21 digits) contains 22 as substring.

Together with 11000033279, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (11000033221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5500016640 + 5500016641.

It is an arithmetic number, because the mean of its divisors is an integer number (5500016641).

Almost surely, 2^11000033281 is an apocalyptic number.

It is an amenable number.

11000033281 is a deficient number, since it is larger than the sum of its proper divisors (1).

11000033281 is an equidigital number, since it uses as much as digits as its factorization.

11000033281 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 144, while the sum is 19.

Adding to 11000033281 its reverse (18233000011), we get a palindrome (29233033292).

The spelling of 11000033281 in words is "eleven billion, thirty-three thousand, two hundred eighty-one".