11181911233 has 2 divisors, whose sum is σ = 11181911234. Its totient is φ = 11181911232.

The previous prime is 11181911183. The next prime is 11181911249. The reversal of 11181911233 is 33211918111.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6848059009 + 4333852224 = 82753^2 + 65832^2 .

It is an emirp because it is prime and its reverse (33211918111) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 11181911233 - 2¹³ = 11181903041 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 11181911195 and 11181911204.

It is not a weakly prime, because it can be changed into another prime (11181911033) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5590955616 + 5590955617.

It is an arithmetic number, because the mean of its divisors is an integer number (5590955617).

Almost surely, 2^11181911233 is an apocalyptic number.

It is an amenable number.

11181911233 is a deficient number, since it is larger than the sum of its proper divisors (1).

11181911233 is an equidigital number, since it uses as much as digits as its factorization.

11181911233 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1296, while the sum is 31.

The spelling of 11181911233 in words is "eleven billion, one hundred eighty-one million, nine hundred eleven thousand, two hundred thirty-three".