112220221 has 4 divisors (see below), whose sum is σ = 112251744. Its totient is φ = 112188700.

The previous prime is 112220201. The next prime is 112220231. The reversal of 112220221 is 122022211.

It is a happy number.

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 a de Polignac number, because none of the positive numbers 2^k-112220221 is a prime.

It is a super-4 number, since 4×112220221⁴ (a number of 33 digits) contains 4444 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (112220201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9625 + ... + 17806.

It is an arithmetic number, because the mean of its divisors is an integer number (28062936).

Almost surely, 2^112220221 is an apocalyptic number.

It is an amenable number.

112220221 is a deficient number, since it is larger than the sum of its proper divisors (31523).

112220221 is an equidigital number, since it uses as much as digits as its factorization.

112220221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31522.

The product of its (nonzero) digits is 32, while the sum is 13.

The square root of 112220221 is about 10593.4045990890. The cubic root of 112220221 is about 482.3441769100.

Adding to 112220221 its reverse (122022211), we get a palindrome (234242432).

The spelling of 112220221 in words is "one hundred twelve million, two hundred twenty thousand, two hundred twenty-one".