212221122823 has 2 divisors, whose sum is σ = 212221122824. Its totient is φ = 212221122822.

The previous prime is 212221122811. The next prime is 212221122899. The reversal of 212221122823 is 328221122212.

212221122823 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 212221122823 - 2⁵ = 212221122791 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 212221122791 and 212221122800.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (212221122623) 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 as a sum of consecutive naturals, namely, 106110561411 + 106110561412.

It is an arithmetic number, because the mean of its divisors is an integer number (106110561412).

Almost surely, 2^212221122823 is an apocalyptic number.

212221122823 is a deficient number, since it is larger than the sum of its proper divisors (1).

212221122823 is an equidigital number, since it uses as much as digits as its factorization.

212221122823 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3072, while the sum is 28.

The spelling of 212221122823 in words is "two hundred twelve billion, two hundred twenty-one million, one hundred twenty-two thousand, eight hundred twenty-three".