112310021 has 4 divisors (see below), whose sum is σ = 114429132. Its totient is φ = 110190912.

The previous prime is 112309999. The next prime is 112310053. The reversal of 112310021 is 120013211.

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 50608996 + 61701025 = 7114^2 + 7855^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-112310021 is a prime.

It is a super-2 number, since 2×112310021² = 25227081634040882, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 112309984 and 112310011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (112310621) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1059476 + ... + 1059581.

It is an arithmetic number, because the mean of its divisors is an integer number (28607283).

Almost surely, 2^112310021 is an apocalyptic number.

It is an amenable number.

112310021 is a deficient number, since it is larger than the sum of its proper divisors (2119111).

112310021 is an equidigital number, since it uses as much as digits as its factorization.

112310021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2119110.

The product of its (nonzero) digits is 12, while the sum is 11.

The square root of 112310021 is about 10597.6422377810. The cubic root of 112310021 is about 482.4728018531.

Adding to 112310021 its reverse (120013211), we get a palindrome (232323232).

The spelling of 112310021 in words is "one hundred twelve million, three hundred ten thousand, twenty-one".