111001201102001 has 16 divisors (see below), whose sum is σ = 128130146601600. Its totient is φ = 94192123753728.

The previous prime is 111001201101997. The next prime is 111001201102009. The reversal of 111001201102001 is 100201102100111.

It is not a de Polignac number, because 111001201102001 - 2² = 111001201101997 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (111001201102009) 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, 81002846 + ... + 82361783.

It is an arithmetic number, because the mean of its divisors is an integer number (8008134162600).

Almost surely, 2^{111001201102001} is an apocalyptic number.

It is an amenable number.

111001201102001 is a deficient number, since it is larger than the sum of its proper divisors (17128945499599).

111001201102001 is a wasteful number, since it uses less digits than its factorization.

111001201102001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 163365608.

The product of its (nonzero) digits is 4, while the sum is 11.

Adding to 111001201102001 its reverse (100201102100111), we get a palindrome (211202303202112).

The spelling of 111001201102001 in words is "one hundred eleven trillion, one billion, two hundred one million, one hundred two thousand, one".