112220161 has 8 divisors (see below), whose sum is σ = 114758784. Its totient is φ = 109687920.

The previous prime is 112220131. The next prime is 112220201. The reversal of 112220161 is 161022211.

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 112220161 - 2⁷ = 112220033 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (112220131) 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, 59371 + ... + 61231.

It is an arithmetic number, because the mean of its divisors is an integer number (14344848).

Almost surely, 2^112220161 is an apocalyptic number.

It is an amenable number.

112220161 is a deficient number, since it is larger than the sum of its proper divisors (2538623).

112220161 is a wasteful number, since it uses less digits than its factorization.

112220161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3191.

The product of its (nonzero) digits is 48, while the sum is 16.

The square root of 112220161 is about 10593.4017671379. The cubic root of 112220161 is about 482.3440909461.

Adding to 112220161 its reverse (161022211), we get a palindrome (273242372).

The spelling of 112220161 in words is "one hundred twelve million, two hundred twenty thousand, one hundred sixty-one".