112120021121 has 4 divisors (see below), whose sum is σ = 116994804672. Its totient is φ = 107245237572.

The previous prime is 112120021099. The next prime is 112120021127. The reversal of 112120021121 is 121120021211.

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 a de Polignac number, because none of the positive numbers 2^k-112120021121 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 112120021096 and 112120021105.

It is not an unprimeable number, because it can be changed into a prime (112120021127) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2437391741 + ... + 2437391786.

It is an arithmetic number, because the mean of its divisors is an integer number (29248701168).

Almost surely, 2^112120021121 is an apocalyptic number.

It is an amenable number.

112120021121 is a deficient number, since it is larger than the sum of its proper divisors (4874783551).

112120021121 is an equidigital number, since it uses as much as digits as its factorization.

112120021121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4874783550.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 112120021121 its reverse (121120021211), we get a palindrome (233240042332).

The spelling of 112120021121 in words is "one hundred twelve billion, one hundred twenty million, twenty-one thousand, one hundred twenty-one".