112111012220021 has 4 divisors (see below), whose sum is σ = 112111809719232. Its totient is φ = 112110214720812.

The previous prime is 112111012219807. The next prime is 112111012220071. The reversal of 112111012220021 is 120022210111211.

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-112111012220021 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (112111012220071) 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, 398538701 + ... + 398819906.

It is an arithmetic number, because the mean of its divisors is an integer number (28027952429808).

Almost surely, 2^{112111012220021} is an apocalyptic number.

It is an amenable number.

112111012220021 is a deficient number, since it is larger than the sum of its proper divisors (797499211).

112111012220021 is an equidigital number, since it uses as much as digits as its factorization.

112111012220021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 797499210.

The product of its (nonzero) digits is 32, while the sum is 17.

Adding to 112111012220021 its reverse (120022210111211), we get a palindrome (232133222331232).

The spelling of 112111012220021 in words is "one hundred twelve trillion, one hundred eleven billion, twelve million, two hundred twenty thousand, twenty-one".