11101001221011 has 32 divisors (see below), whose sum is σ = 16457079654400. Its totient is φ = 6609816691200.

The previous prime is 11101001221007. The next prime is 11101001221103. The reversal of 11101001221011 is 11012210010111.

It is not a de Polignac number, because 11101001221011 - 2² = 11101001221007 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11101001221411) 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 in 31 ways as a sum of consecutive naturals, for example, 5843340 + ... + 7506438.

It is an arithmetic number, because the mean of its divisors is an integer number (514283739200).

Almost surely, 2^{11101001221011} is an apocalyptic number.

11101001221011 is a deficient number, since it is larger than the sum of its proper divisors (5356078433389).

11101001221011 is a wasteful number, since it uses less digits than its factorization.

11101001221011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1668667.

The product of its (nonzero) digits is 4, while the sum is 12.

Adding to 11101001221011 its reverse (11012210010111), we get a palindrome (22113211231122).

The spelling of 11101001221011 in words is "eleven trillion, one hundred one billion, one million, two hundred twenty-one thousand, eleven".