112222139 has 4 divisors (see below), whose sum is σ = 115842240. Its totient is φ = 108602040.

The previous prime is 112222133. The next prime is 112222171. The reversal of 112222139 is 931222211.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-112222139 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (112222133) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1810004 + ... + 1810065.

It is an arithmetic number, because the mean of its divisors is an integer number (28960560).

Almost surely, 2^112222139 is an apocalyptic number.

112222139 is a deficient number, since it is larger than the sum of its proper divisors (3620101).

112222139 is an equidigital number, since it uses as much as digits as its factorization.

112222139 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3620100.

The product of its digits is 432, while the sum is 23.

The square root of 112222139 is about 10593.4951267275. The cubic root of 112222139 is about 482.3469248725.

The spelling of 112222139 in words is "one hundred twelve million, two hundred twenty-two thousand, one hundred thirty-nine".