112012221121021 has 4 divisors (see below), whose sum is σ = 120628545822652. Its totient is φ = 103395896419392.

The previous prime is 112012221120997. The next prime is 112012221121043. The reversal of 112012221121021 is 120121122210211.

It is a happy number.

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 30702126902500 + 81310094218521 = 5540950^2 + 9017211^2 .

It is a cyclic number.

It is not a de Polignac number, because 112012221121021 - 2³³ = 112003631186429 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 112012221121021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (112012221131021) 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, 4308162350796 + ... + 4308162350821.

It is an arithmetic number, because the mean of its divisors is an integer number (30157136455663).

Almost surely, 2^{112012221121021} is an apocalyptic number.

It is an amenable number.

112012221121021 is a deficient number, since it is larger than the sum of its proper divisors (8616324701631).

112012221121021 is an equidigital number, since it uses as much as digits as its factorization.

112012221121021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8616324701630.

The product of its (nonzero) digits is 64, while the sum is 19.

Adding to 112012221121021 its reverse (120121122210211), we get a palindrome (232133343331232).

The spelling of 112012221121021 in words is "one hundred twelve trillion, twelve billion, two hundred twenty-one million, one hundred twenty-one thousand, twenty-one".