11111605011011 has 16 divisors (see below), whose sum is σ = 11738602500000. Its totient is φ = 10488828672000.

The previous prime is 11111605010999. The next prime is 11111605011029. The reversal of 11111605011011 is 11011050611111.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 11111605011011 - 2²² = 11111600816707 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11111605011071) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 166805111 + ... + 166871711.

It is an arithmetic number, because the mean of its divisors is an integer number (733662656250).

Almost surely, 2^{11111605011011} is an apocalyptic number.

11111605011011 is a deficient number, since it is larger than the sum of its proper divisors (626997488989).

11111605011011 is a wasteful number, since it uses less digits than its factorization.

11111605011011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 98150.

The product of its (nonzero) digits is 30, while the sum is 20.

Adding to 11111605011011 its reverse (11011050611111), we get a palindrome (22122655622122).

The spelling of 11111605011011 in words is "eleven trillion, one hundred eleven billion, six hundred five million, eleven thousand, eleven".