112142221 has 4 divisors (see below), whose sum is σ = 115759744. Its totient is φ = 108524700.

The previous prime is 112142209. The next prime is 112142231. The reversal of 112142221 is 122241211.

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 112142221 - 2²¹ = 110045069 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 112142195 and 112142204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (112142231) 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, 1808715 + ... + 1808776.

It is an arithmetic number, because the mean of its divisors is an integer number (28939936).

Almost surely, 2^112142221 is an apocalyptic number.

It is an amenable number.

112142221 is a deficient number, since it is larger than the sum of its proper divisors (3617523).

112142221 is an equidigital number, since it uses as much as digits as its factorization.

112142221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3617522.

The product of its digits is 64, while the sum is 16.

The square root of 112142221 is about 10589.7224231799. The cubic root of 112142221 is about 482.2323979883.

Adding to 112142221 its reverse (122241211), we get a palindrome (234383432).

The spelling of 112142221 in words is "one hundred twelve million, one hundred forty-two thousand, two hundred twenty-one".