111222120102001 has 16 divisors (see below), whose sum is σ = 116428180377600. Its totient is φ = 106117231928400.

The previous prime is 111222120101987. The next prime is 111222120102013. The reversal of 111222120102001 is 100201021222111.

It is not a de Polignac number, because 111222120102001 - 2¹¹ = 111222120099953 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (111222120102061) 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, 279634210 + ... + 280031668.

It is an arithmetic number, because the mean of its divisors is an integer number (7276761273600).

Almost surely, 2^{111222120102001} is an apocalyptic number.

It is an amenable number.

111222120102001 is a deficient number, since it is larger than the sum of its proper divisors (5206060275599).

111222120102001 is a wasteful number, since it uses less digits than its factorization.

111222120102001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 524700.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 111222120102001 its reverse (100201021222111), we get a palindrome (211423141324112).

The spelling of 111222120102001 in words is "one hundred eleven trillion, two hundred twenty-two billion, one hundred twenty million, one hundred two thousand, one".