112011220220021 has 2 divisors, whose sum is σ = 112011220220022. Its totient is φ = 112011220220020.

The previous prime is 112011220220017. The next prime is 112011220220023. The reversal of 112011220220021 is 120022022110211.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 108355816548100 + 3655403671921 = 10409410^2 + 1911911^2 .

It is a cyclic number.

It is not a de Polignac number, because 112011220220021 - 2² = 112011220220017 is a prime.

Together with 112011220220023, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (112011220220023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 56005610110010 + 56005610110011.

It is an arithmetic number, because the mean of its divisors is an integer number (56005610110011).

Almost surely, 2^{112011220220021} is an apocalyptic number.

It is an amenable number.

112011220220021 is a deficient number, since it is larger than the sum of its proper divisors (1).

112011220220021 is an equidigital number, since it uses as much as digits as its factorization.

112011220220021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 112011220220021 its reverse (120022022110211), we get a palindrome (232033242330232).

The spelling of 112011220220021 in words is "one hundred twelve trillion, eleven billion, two hundred twenty million, two hundred twenty thousand, twenty-one".