11100500081 has 8 divisors (see below), whose sum is σ = 12821968224. Its totient is φ = 9497753920.

The previous prime is 11100500077. The next prime is 11100500111. The reversal of 11100500081 is 18000500111.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 11100500081 - 2² = 11100500077 is a prime.

It is a super-2 number, since 2×11100500081² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (11100500381) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 29680295 + ... + 29680668.

It is an arithmetic number, because the mean of its divisors is an integer number (1602746028).

Almost surely, 2^11100500081 is an apocalyptic number.

11100500081 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

11100500081 is a deficient number, since it is larger than the sum of its proper divisors (1721468143).

11100500081 is a wasteful number, since it uses less digits than its factorization.

11100500081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59360991.

The product of its (nonzero) digits is 40, while the sum is 17.

The spelling of 11100500081 in words is "eleven billion, one hundred million, five hundred thousand, eighty-one".