111011101112221 has 8 divisors (see below), whose sum is σ = 111106826409600. Its totient is φ = 110915416616832.

The previous prime is 111011101112209. The next prime is 111011101112269. The reversal of 111011101112221 is 122211101110111.

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

It is a cyclic number.

It is not a de Polignac number, because 111011101112221 - 2⁵ = 111011101112189 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 111011101112195 and 111011101112204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111011101119221) 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, 4755445 + ... + 15640858.

It is an arithmetic number, because the mean of its divisors is an integer number (13888353301200).

Almost surely, 2^{111011101112221} is an apocalyptic number.

It is an amenable number.

111011101112221 is a deficient number, since it is larger than the sum of its proper divisors (95725297379).

111011101112221 is a wasteful number, since it uses less digits than its factorization.

111011101112221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20400995.

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

Adding to 111011101112221 its reverse (122211101110111), we get a palindrome (233222202222332).

The spelling of 111011101112221 in words is "one hundred eleven trillion, eleven billion, one hundred one million, one hundred twelve thousand, two hundred twenty-one".