111221111201 has 8 divisors (see below), whose sum is σ = 116192254464. Its totient is φ = 106261254880.

The previous prime is 111221111179. The next prime is 111221111207. The reversal of 111221111201 is 102111122111.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 111221111201 - 2¹⁸ = 111220849057 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (111221111207) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2801585 + ... + 2841006.

It is an arithmetic number, because the mean of its divisors is an integer number (14524031808).

Almost surely, 2^111221111201 is an apocalyptic number.

It is an amenable number.

111221111201 is a deficient number, since it is larger than the sum of its proper divisors (4971143263).

111221111201 is an equidigital number, since it uses as much as digits as its factorization.

111221111201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5643471.

The product of its (nonzero) digits is 8, while the sum is 14.

Adding to 111221111201 its reverse (102111122111), we get a palindrome (213332233312).

The spelling of 111221111201 in words is "one hundred eleven billion, two hundred twenty-one million, one hundred eleven thousand, two hundred one".