111001102221 has 4 divisors (see below), whose sum is σ = 148001469632. Its totient is φ = 74000734812.

The previous prime is 111001102189. The next prime is 111001102271. The reversal of 111001102221 is 122201100111.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 111001102221 - 2⁵ = 111001102189 is a prime.

It is a super-2 number, since 2×111001102221² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 111001102197 and 111001102206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111001102271) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18500183701 + ... + 18500183706.

It is an arithmetic number, because the mean of its divisors is an integer number (37000367408).

Almost surely, 2^111001102221 is an apocalyptic number.

It is an amenable number.

111001102221 is a deficient number, since it is larger than the sum of its proper divisors (37000367411).

111001102221 is an equidigital number, since it uses as much as digits as its factorization.

111001102221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37000367410.

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 111001102221 its reverse (122201100111), we get a palindrome (233202202332).

The spelling of 111001102221 in words is "one hundred eleven billion, one million, one hundred two thousand, two hundred twenty-one".