100116181 has 4 divisors (see below), whose sum is σ = 109217664. Its totient is φ = 91014700.

The previous prime is 100116161. The next prime is 100116193. The reversal of 100116181 is 181611001.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 100116181 - 2¹³ = 100107989 is a prime.

It is a super-2 number, since 2×100116181² = 20046499396049522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100116131) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4550725 + ... + 4550746.

It is an arithmetic number, because the mean of its divisors is an integer number (27304416).

Almost surely, 2^100116181 is an apocalyptic number.

100116181 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

100116181 is a deficient number, since it is larger than the sum of its proper divisors (9101483).

100116181 is an equidigital number, since it uses as much as digits as its factorization.

100116181 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9101482.

The product of its (nonzero) digits is 48, while the sum is 19.

The square root of 100116181 is about 10005.8073637263. The cubic root of 100116181 is about 464.3385686033.

Adding to 100116181 its reverse (181611001), we get a palindrome (281727182).

It can be divided in two parts, 100 and 116181, that added together give a square (116281 = 341²).

The spelling of 100116181 in words is "one hundred million, one hundred sixteen thousand, one hundred eighty-one".