11111000120001 has 32 divisors (see below), whose sum is σ = 17432018150400. Its totient is φ = 6970408577280.

The previous prime is 11111000119987. The next prime is 11111000120071. The reversal of 11111000120001 is 10002100011111.

It is not a de Polignac number, because 11111000120001 - 2¹⁷ = 11110999988929 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is not an unprimeable number, because it can be changed into a prime (11111000120071) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 592560 + ... + 4751118.

It is an arithmetic number, because the mean of its divisors is an integer number (544750567200).

Almost surely, 2^{11111000120001} is an apocalyptic number.

It is an amenable number.

11111000120001 is a deficient number, since it is larger than the sum of its proper divisors (6321018030399).

11111000120001 is a wasteful number, since it uses less digits than its factorization.

11111000120001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4164406 (or 4164400 counting only the distinct ones).

The product of its (nonzero) digits is 2, while the sum is 9.

Adding to 11111000120001 its reverse (10002100011111), we get a palindrome (21113100131112).

The spelling of 11111000120001 in words is "eleven trillion, one hundred eleven billion, one hundred twenty thousand, one".