112123021 has 4 divisors (see below), whose sum is σ = 112301344. Its totient is φ = 111944700.

The previous prime is 112122991. The next prime is 112123027. The reversal of 112123021 is 120321211.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 112123021 - 2⁷ = 112122893 is a prime.

It is a super-3 number, since 3×112123021³ (a number of 25 digits) contains 333 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 112122992 and 112123010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (112123027) 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, 88215 + ... + 89476.

It is an arithmetic number, because the mean of its divisors is an integer number (28075336).

Almost surely, 2^112123021 is an apocalyptic number.

It is an amenable number.

112123021 is a deficient number, since it is larger than the sum of its proper divisors (178323).

112123021 is an equidigital number, since it uses as much as digits as its factorization.

112123021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 178322.

The product of its (nonzero) digits is 24, while the sum is 13.

The square root of 112123021 is about 10588.8158450320. The cubic root of 112123021 is about 482.2048752277.

Adding to 112123021 its reverse (120321211), we get a palindrome (232444232).

It can be divided in two parts, 1121 and 23021, that added together give a palindrome (24142).

The spelling of 112123021 in words is "one hundred twelve million, one hundred twenty-three thousand, twenty-one".