112021405 has 4 divisors (see below), whose sum is σ = 134425692. Its totient is φ = 89617120.

The previous prime is 112021391. The next prime is 112021411. The reversal of 112021405 is 504120211.

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

It can be written as a sum of positive squares in 2 ways, for example, as 81252196 + 30769209 = 9014^2 + 5547^2 .

It is not a de Polignac number, because 112021405 - 2⁹ = 112020893 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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, 11202136 + ... + 11202145.

It is an arithmetic number, because the mean of its divisors is an integer number (33606423).

Almost surely, 2^112021405 is an apocalyptic number.

It is an amenable number.

112021405 is a deficient number, since it is larger than the sum of its proper divisors (22404287).

112021405 is an equidigital number, since it uses as much as digits as its factorization.

112021405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22404286.

The product of its (nonzero) digits is 80, while the sum is 16.

The square root of 112021405 is about 10584.0164871376. The cubic root of 112021405 is about 482.0591586737.

Adding to 112021405 its reverse (504120211), we get a palindrome (616141616).

The spelling of 112021405 in words is "one hundred twelve million, twenty-one thousand, four hundred five".