11101100120001 has 24 divisors (see below), whose sum is σ = 16999534133504. Its totient is φ = 6968432501280.

The previous prime is 11101100119997. The next prime is 11101100120029. The reversal of 11101100120001 is 10002100110111.

It is not a de Polignac number, because 11101100120001 - 2² = 11101100119997 is a prime.

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

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11101100120041) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 537677371 + ... + 537698016.

Almost surely, 2^{11101100120001} is an apocalyptic number.

It is an amenable number.

11101100120001 is a deficient number, since it is larger than the sum of its proper divisors (5898434013503).

11101100120001 is a wasteful number, since it uses less digits than its factorization.

11101100120001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1075375461 (or 1075375458 counting only the distinct ones).

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

Adding to 11101100120001 its reverse (10002100110111), we get a palindrome (21103200230112).

The spelling of 11101100120001 in words is "eleven trillion, one hundred one billion, one hundred million, one hundred twenty thousand, one".