20111130233 has 2 divisors, whose sum is σ = 20111130234. Its totient is φ = 20111130232.

The previous prime is 20111130217. The next prime is 20111130239. The reversal of 20111130233 is 33203111102.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 18575509264 + 1535620969 = 136292^2 + 39187^2 .

It is a cyclic number.

It is not a de Polignac number, because 20111130233 - 2⁴ = 20111130217 is a prime.

It is not a weakly prime, because it can be changed into another prime (20111130239) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10055565116 + 10055565117.

It is an arithmetic number, because the mean of its divisors is an integer number (10055565117).

Almost surely, 2^20111130233 is an apocalyptic number.

It is an amenable number.

20111130233 is a deficient number, since it is larger than the sum of its proper divisors (1).

20111130233 is an equidigital number, since it uses as much as digits as its factorization.

20111130233 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 108, while the sum is 17.

Adding to 20111130233 its reverse (33203111102), we get a palindrome (53314241335).

The spelling of 20111130233 in words is "twenty billion, one hundred eleven million, one hundred thirty thousand, two hundred thirty-three".