111221001100101 has 32 divisors (see below), whose sum is σ = 152377942671360. Its totient is φ = 72137879446464.

The previous prime is 111221001100093. The next prime is 111221001100163. The reversal of 111221001100101 is 101001100122111.

It is not a de Polignac number, because 111221001100101 - 2³ = 111221001100093 is a prime.

It is a super-2 number, since 2×111221001100101² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111221001101101) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 152715 + ... + 14915271.

It is an arithmetic number, because the mean of its divisors is an integer number (4761810708480).

Almost surely, 2^{111221001100101} is an apocalyptic number.

It is an amenable number.

111221001100101 is a deficient number, since it is larger than the sum of its proper divisors (41156941571259).

111221001100101 is a wasteful number, since it uses less digits than its factorization.

111221001100101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14763105.

The product of its (nonzero) digits is 4, while the sum is 12.

Adding to 111221001100101 its reverse (101001100122111), we get a palindrome (212222101222212).

The spelling of 111221001100101 in words is "one hundred eleven trillion, two hundred twenty-one billion, one million, one hundred thousand, one hundred one".