111011111221201 has 32 divisors (see below), whose sum is σ = 117971614539648. Its totient is φ = 104099296435200.

The previous prime is 111011111221193. The next prime is 111011111221207. The reversal of 111011111221201 is 102122111110111.

It is not a de Polignac number, because 111011111221201 - 2³ = 111011111221193 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (111011111221207) 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, 27403382626 + ... + 27403386676.

It is an arithmetic number, because the mean of its divisors is an integer number (3686612954364).

Almost surely, 2^{111011111221201} is an apocalyptic number.

It is an amenable number.

111011111221201 is a deficient number, since it is larger than the sum of its proper divisors (6960503318447).

111011111221201 is a wasteful number, since it uses less digits than its factorization.

111011111221201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9361.

The product of its (nonzero) digits is 8, while the sum is 16.

Adding to 111011111221201 its reverse (102122111110111), we get a palindrome (213133222331312).

The spelling of 111011111221201 in words is "one hundred eleven trillion, eleven billion, one hundred eleven million, two hundred twenty-one thousand, two hundred one".