1112110112221 has 8 divisors (see below), whose sum is σ = 1116758157944. Its totient is φ = 1107462343680.

The previous prime is 1112110112189. The next prime is 1112110112237. The reversal of 1112110112221 is 1222110112111.

It can be written as a sum of positive squares in 4 ways, for example, as 214327332025 + 897782780196 = 462955^2 + 947514^2 .

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 1112110112221 - 2⁵ = 1112110112189 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1112110112195 and 1112110112204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1112110112621) 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, 13482115 + ... + 13564351.

It is an arithmetic number, because the mean of its divisors is an integer number (139594769743).

Almost surely, 2^{1112110112221} is an apocalyptic number.

It is an amenable number.

1112110112221 is a deficient number, since it is larger than the sum of its proper divisors (4648045723).

1112110112221 is an equidigital number, since it uses as much as digits as its factorization.

1112110112221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 138591.

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

Adding to 1112110112221 its reverse (1222110112111), we get a palindrome (2334220224332).

The spelling of 1112110112221 in words is "one trillion, one hundred twelve billion, one hundred ten million, one hundred twelve thousand, two hundred twenty-one".