1100211010081 has 2 divisors, whose sum is σ = 1100211010082. Its totient is φ = 1100211010080.

The previous prime is 1100211009959. The next prime is 1100211010111. The reversal of 1100211010081 is 1800101120011.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 770954241600 + 329256768481 = 878040^2 + 573809^2 .

It is an emirp because it is prime and its reverse (1800101120011) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1100211010081 - 2¹³ = 1100211001889 is a prime.

It is a super-2 number, since 2×1100211010081² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1100211020081) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 550105505040 + 550105505041.

It is an arithmetic number, because the mean of its divisors is an integer number (550105505041).

Almost surely, 2^{1100211010081} is an apocalyptic number.

It is an amenable number.

1100211010081 is a deficient number, since it is larger than the sum of its proper divisors (1).

1100211010081 is an equidigital number, since it uses as much as digits as its factorization.

1100211010081 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 16, while the sum is 16.

Adding to 1100211010081 its reverse (1800101120011), we get a palindrome (2900312130092).

The spelling of 1100211010081 in words is "one trillion, one hundred billion, two hundred eleven million, ten thousand, eighty-one".