1112100221 has 4 divisors (see below), whose sum is σ = 1116753600. Its totient is φ = 1107446844.

The previous prime is 1112100181. The next prime is 1112100251. The reversal of 1112100221 is 1220012111.

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 a cyclic number.

It is not a de Polignac number, because 1112100221 - 2²⁶ = 1044991357 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 (1112100251) 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, 2326331 + ... + 2326808.

It is an arithmetic number, because the mean of its divisors is an integer number (279188400).

Almost surely, 2^1112100221 is an apocalyptic number.

It is an amenable number.

1112100221 is a deficient number, since it is larger than the sum of its proper divisors (4653379).

1112100221 is an equidigital number, since it uses as much as digits as its factorization.

1112100221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4653378.

The product of its (nonzero) digits is 8, while the sum is 11.

The square root of 1112100221 is about 33348.1666812435. The cubic root of 1112100221 is about 1036.0514169385.

Adding to 1112100221 its reverse (1220012111), we get a palindrome (2332112332).

The spelling of 1112100221 in words is "one billion, one hundred twelve million, one hundred thousand, two hundred twenty-one".