111201220101001 has 16 divisors (see below), whose sum is σ = 115117785619200. Its totient is φ = 107290151337600.

The previous prime is 111201220100923. The next prime is 111201220101043. The reversal of 111201220101001 is 100101022102111.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 111201220101001 - 2²¹ = 111201218003849 is a prime.

It is a super-2 number, since 2×111201220101001² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (111201220101701) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 229889085 + ... + 230372293.

It is an arithmetic number, because the mean of its divisors is an integer number (7194861601200).

Almost surely, 2^{111201220101001} is an apocalyptic number.

It is an amenable number.

111201220101001 is a deficient number, since it is larger than the sum of its proper divisors (3916565518199).

111201220101001 is a wasteful number, since it uses less digits than its factorization.

111201220101001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 488880.

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 111201220101001 its reverse (100101022102111), we get a palindrome (211302242203112).

The spelling of 111201220101001 in words is "one hundred eleven trillion, two hundred one billion, two hundred twenty million, one hundred one thousand, one".