1115550011101 has 16 divisors (see below), whose sum is σ = 1197252057600. Its totient is φ = 1036174621248.

The previous prime is 1115550011033. The next prime is 1115550011129. The reversal of 1115550011101 is 1011100555111.

It is a happy number.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1115550011101 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1115550011201) 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, 1064155 + ... + 1833991.

It is an arithmetic number, because the mean of its divisors is an integer number (74828253600).

Almost surely, 2^{1115550011101} is an apocalyptic number.

It is an amenable number.

1115550011101 is a deficient number, since it is larger than the sum of its proper divisors (81702046499).

1115550011101 is a wasteful number, since it uses less digits than its factorization.

1115550011101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 771348.

The product of its (nonzero) digits is 125, while the sum is 22.

Adding to 1115550011101 its reverse (1011100555111), we get a palindrome (2126650566212).

The spelling of 1115550011101 in words is "one trillion, one hundred fifteen billion, five hundred fifty million, eleven thousand, one hundred one".