11001220110001 has 16 divisors (see below), whose sum is σ = 12108048765120. Its totient is φ = 9912185221120.

The previous prime is 11001220109983. The next prime is 11001220110031. The reversal of 11001220110001 is 10001102210011.

It is a cyclic number.

It is not a de Polignac number, because 11001220110001 - 2⁵ = 11001220109969 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 11001220110001.

It is not an unprimeable number, because it can be changed into a prime (11001220110031) 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 15 ways as a sum of consecutive naturals, for example, 31409226 + ... + 31757548.

It is an arithmetic number, because the mean of its divisors is an integer number (756753047820).

Almost surely, 2^{11001220110001} is an apocalyptic number.

11001220110001 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

11001220110001 is a deficient number, since it is larger than the sum of its proper divisors (1106828655119).

11001220110001 is a wasteful number, since it uses less digits than its factorization.

11001220110001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 373856.

The product of its (nonzero) digits is 4, while the sum is 10.

Adding to 11001220110001 its reverse (10001102210011), we get a palindrome (21002322320012).

The spelling of 11001220110001 in words is "eleven trillion, one billion, two hundred twenty million, one hundred ten thousand, one".