18201000100111 has 8 divisors (see below), whose sum is σ = 18205686157824. Its totient is φ = 18196314308640.

The previous prime is 18201000100067. The next prime is 18201000100133. The reversal of 18201000100111 is 11100100010281.

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 18201000100111 - 2⁷ = 18201000099983 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 (18201000100711) 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, 262807090 + ... + 262876336.

It is an arithmetic number, because the mean of its divisors is an integer number (2275710769728).

Almost surely, 2^{18201000100111} is an apocalyptic number.

18201000100111 is a deficient number, since it is larger than the sum of its proper divisors (4686057713).

18201000100111 is an equidigital number, since it uses as much as digits as its factorization.

18201000100111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 133121.

The product of its (nonzero) digits is 16, while the sum is 16.

Adding to 18201000100111 its reverse (11100100010281), we get a palindrome (29301100110392).

The spelling of 18201000100111 in words is "eighteen trillion, two hundred one billion, one hundred thousand, one hundred eleven".