112131021 has 16 divisors (see below), whose sum is σ = 150980544. Its totient is φ = 74022144.

The previous prime is 112131013. The next prime is 112131043. The reversal of 112131021 is 120131211.

It is not a de Polignac number, because 112131021 - 2³ = 112131013 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 112130988 and 112131006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (112131001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 198886 + ... + 199448.

It is an arithmetic number, because the mean of its divisors is an integer number (9436284).

Almost surely, 2^112131021 is an apocalyptic number.

It is an amenable number.

112131021 is a deficient number, since it is larger than the sum of its proper divisors (38849523).

112131021 is a wasteful number, since it uses less digits than its factorization.

112131021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1100.

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

The square root of 112131021 is about 10589.1935953594. The cubic root of 112131021 is about 482.2163434264.

Adding to 112131021 its reverse (120131211), we get a palindrome (232262232).

The spelling of 112131021 in words is "one hundred twelve million, one hundred thirty-one thousand, twenty-one".