11000081237 has 2 divisors, whose sum is σ = 11000081238. Its totient is φ = 11000081236.

The previous prime is 11000081233. The next prime is 11000081273. The reversal of 11000081237 is 73218000011.

It is a happy number.

Together with next prime (11000081273) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10282162801 + 717918436 = 101401^2 + 26794^2 .

It is a cyclic number.

It is not a de Polignac number, because 11000081237 - 2² = 11000081233 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11000081233) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5500040618 + 5500040619.

It is an arithmetic number, because the mean of its divisors is an integer number (5500040619).

Almost surely, 2^11000081237 is an apocalyptic number.

It is an amenable number.

11000081237 is a deficient number, since it is larger than the sum of its proper divisors (1).

11000081237 is an equidigital number, since it uses as much as digits as its factorization.

11000081237 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 336, while the sum is 23.

Adding to 11000081237 its reverse (73218000011), we get a palindrome (84218081248).

The spelling of 11000081237 in words is "eleven billion, eighty-one thousand, two hundred thirty-seven".