11001111022111 has 48 divisors (see below), whose sum is σ = 13550118696000. Its totient is φ = 8926588698048.

The previous prime is 11001111022093. The next prime is 11001111022133. The reversal of 11001111022111 is 11122011110011.

It is not a de Polignac number, because 11001111022111 - 2²¹ = 11001108924959 is a prime.

It is a super-2 number, since 2×11001111022111² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11001111022091 and 11001111022100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11001111022511) 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 in 47 ways as a sum of consecutive naturals, for example, 169976625 + ... + 170041333.

It is an arithmetic number, because the mean of its divisors is an integer number (282294139500).

Almost surely, 2^{11001111022111} is an apocalyptic number.

11001111022111 is a deficient number, since it is larger than the sum of its proper divisors (2549007673889).

11001111022111 is an equidigital number, since it uses as much as digits as its factorization.

11001111022111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66141 (or 66108 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 13.

Adding to 11001111022111 its reverse (11122011110011), we get a palindrome (22123122132122).

The spelling of 11001111022111 in words is "eleven trillion, one billion, one hundred eleven million, twenty-two thousand, one hundred eleven".