112220009 has 16 divisors (see below), whose sum is σ = 129962880. Its totient is φ = 95765760.

The previous prime is 112219999. The next prime is 112220021. The reversal of 112220009 is 900022211.

It is a de Polignac number, because none of the positive numbers 2^k-112220009 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (112220039) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 121652 + ... + 122570.

It is an arithmetic number, because the mean of its divisors is an integer number (8122680).

Almost surely, 2^112220009 is an apocalyptic number.

It is an amenable number.

112220009 is a deficient number, since it is larger than the sum of its proper divisors (17742871).

112220009 is a wasteful number, since it uses less digits than its factorization.

112220009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1600.

The product of its (nonzero) digits is 72, while the sum is 17.

The square root of 112220009 is about 10593.3945928583. The cubic root of 112220009 is about 482.3438731709.

The spelling of 112220009 in words is "one hundred twelve million, two hundred twenty thousand, nine".