11000211021881 has 2 divisors, whose sum is σ = 11000211021882. Its totient is φ = 11000211021880.

The previous prime is 11000211021851. The next prime is 11000211021907. The reversal of 11000211021881 is 18812011200011.

It is an a-pointer prime, because the next prime (11000211021907) can be obtained adding 11000211021881 to its sum of digits (26).

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10404753409600 + 595457612281 = 3225640^2 + 771659^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11000211021881 is a prime.

It is a super-2 number, since 2×11000211021881² (a number of 27 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 11000211021881.

It is not a weakly prime, because it can be changed into another prime (11000211021851) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5500105510940 + 5500105510941.

It is an arithmetic number, because the mean of its divisors is an integer number (5500105510941).

Almost surely, 2^{11000211021881} is an apocalyptic number.

It is an amenable number.

11000211021881 is a deficient number, since it is larger than the sum of its proper divisors (1).

11000211021881 is an equidigital number, since it uses as much as digits as its factorization.

11000211021881 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 256, while the sum is 26.

Adding to 11000211021881 its reverse (18812011200011), we get a palindrome (29812222221892).

The spelling of 11000211021881 in words is "eleven trillion, two hundred eleven million, twenty-one thousand, eight hundred eighty-one".