111100012001 has 16 divisors (see below), whose sum is σ = 122093619648. Its totient is φ = 100257393600.

The previous prime is 111100011961. The next prime is 111100012003. The reversal of 111100012001 is 100210001111.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 111100012001 - 2¹⁸ = 111099749857 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 111100012001.

It is not an unprimeable number, because it can be changed into a prime (111100012003) 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, 1038071 + ... + 1140083.

It is an arithmetic number, because the mean of its divisors is an integer number (7630851228).

Almost surely, 2^111100012001 is an apocalyptic number.

111100012001 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

111100012001 is a deficient number, since it is larger than the sum of its proper divisors (10993607647).

111100012001 is a wasteful number, since it uses less digits than its factorization.

111100012001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102752.

The product of its (nonzero) digits is 2, while the sum is 8.

Adding to 111100012001 its reverse (100210001111), we get a palindrome (211310013112).

The spelling of 111100012001 in words is "one hundred eleven billion, one hundred million, twelve thousand, one".