1112222210221 has 8 divisors (see below), whose sum is σ = 1139365826424. Its totient is φ = 1085079367680.

The previous prime is 1112222210179. The next prime is 1112222210233. The reversal of 1112222210221 is 1220122222111.

It can be written as a sum of positive squares in 4 ways, for example, as 372845793321 + 739376416900 = 610611^2 + 859870^2 .

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 1112222210221 - 2²⁷ = 1112087992493 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1112222210321) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3625975 + ... + 3920731.

It is an arithmetic number, because the mean of its divisors is an integer number (142420728303).

Almost surely, 2^{1112222210221} is an apocalyptic number.

It is an amenable number.

1112222210221 is a deficient number, since it is larger than the sum of its proper divisors (27143616203).

1112222210221 is an equidigital number, since it uses as much as digits as its factorization.

1112222210221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 386831.

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 1112222210221 its reverse (1220122222111), we get a palindrome (2332344432332).

The spelling of 1112222210221 in words is "one trillion, one hundred twelve billion, two hundred twenty-two million, two hundred ten thousand, two hundred twenty-one".