112320021 has 16 divisors (see below), whose sum is σ = 163603008. Its totient is φ = 67977600.

The previous prime is 112320007. The next prime is 112320029. The reversal of 112320021 is 120023211.

It is not a de Polignac number, because 112320021 - 2⁶ = 112319957 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 112319979 and 112320006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (112320029) 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, 27001 + ... + 30881.

It is an arithmetic number, because the mean of its divisors is an integer number (10225188).

Almost surely, 2^112320021 is an apocalyptic number.

112320021 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

112320021 is a deficient number, since it is larger than the sum of its proper divisors (51282987).

112320021 is a wasteful number, since it uses less digits than its factorization.

112320021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4772.

The product of its (nonzero) digits is 24, while the sum is 12.

The square root of 112320021 is about 10598.1140303358. The cubic root of 112320021 is about 482.4871211002.

Adding to 112320021 its reverse (120023211), we get a palindrome (232343232).

The spelling of 112320021 in words is "one hundred twelve million, three hundred twenty thousand, twenty-one".