212021031223 has 2 divisors, whose sum is σ = 212021031224. Its totient is φ = 212021031222.

The previous prime is 212021031199. The next prime is 212021031241. The reversal of 212021031223 is 322130120212.

212021031223 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 212021031223 - 2⁵ = 212021031191 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 212021031223.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (212021091223) 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, 106010515611 + 106010515612.

It is an arithmetic number, because the mean of its divisors is an integer number (106010515612).

Almost surely, 2^212021031223 is an apocalyptic number.

212021031223 is a deficient number, since it is larger than the sum of its proper divisors (1).

212021031223 is an equidigital number, since it uses as much as digits as its factorization.

212021031223 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 212021031223 its reverse (322130120212), we get a palindrome (534151151435).

The spelling of 212021031223 in words is "two hundred twelve billion, twenty-one million, thirty-one thousand, two hundred twenty-three".