112000021 has 8 divisors (see below), whose sum is σ = 128186240. Its totient is φ = 95860368.

The previous prime is 111999997. The next prime is 112000043. The reversal of 112000021 is 120000211.

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 112000021 - 2²¹ = 109902869 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (7).

It is a junction number, because it is equal to n+sod(n) for n = 111999968 and 112000013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (112000921) 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, 6321 + ... + 16246.

It is an arithmetic number, because the mean of its divisors is an integer number (16023280).

Almost surely, 2^112000021 is an apocalyptic number.

It is an amenable number.

112000021 is a deficient number, since it is larger than the sum of its proper divisors (16186219).

112000021 is an equidigital number, since it uses as much as digits as its factorization.

112000021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23283.

The product of its (nonzero) digits is 4, while the sum is 7.

The square root of 112000021 is about 10583.0062364151. The cubic root of 112000021 is about 482.0284829618.

Adding to 112000021 its reverse (120000211), we get a palindrome (232000232).

The spelling of 112000021 in words is "one hundred twelve million, twenty-one", and thus it is an aban number.