11111370381111 has 48 divisors (see below), whose sum is σ = 20246892720768. Its totient is φ = 5328129643200.

The previous prime is 11111370381077. The next prime is 11111370381119. The reversal of 11111370381111 is 11118307311111.

It is not a de Polignac number, because 11111370381111 - 2¹⁷ = 11111370250039 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11111370381119) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 264271125 + ... + 264313166.

It is an arithmetic number, because the mean of its divisors is an integer number (421810265016).

Almost surely, 2^{11111370381111} is an apocalyptic number.

11111370381111 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

11111370381111 is a deficient number, since it is larger than the sum of its proper divisors (9135522339657).

11111370381111 is a wasteful number, since it uses less digits than its factorization.

11111370381111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 528584332 (or 528584325 counting only the distinct ones).

The product of its (nonzero) digits is 504, while the sum is 30.

Adding to 11111370381111 its reverse (11118307311111), we get a palindrome (22229677692222).

The spelling of 11111370381111 in words is "eleven trillion, one hundred eleven billion, three hundred seventy million, three hundred eighty-one thousand, one hundred eleven".