21214422223 has 2 divisors, whose sum is σ = 21214422224. Its totient is φ = 21214422222.

The previous prime is 21214422221. The next prime is 21214422233. The reversal of 21214422223 is 32222441212.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 21214422223 - 2¹ = 21214422221 is a prime.

Together with 21214422221, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21214422221) 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, 10607211111 + 10607211112.

It is an arithmetic number, because the mean of its divisors is an integer number (10607211112).

Almost surely, 2^21214422223 is an apocalyptic number.

21214422223 is a deficient number, since it is larger than the sum of its proper divisors (1).

21214422223 is an equidigital number, since it uses as much as digits as its factorization.

21214422223 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3072, while the sum is 25.

Adding to 21214422223 its reverse (32222441212), we get a palindrome (53436863435).

The spelling of 21214422223 in words is "twenty-one billion, two hundred fourteen million, four hundred twenty-two thousand, two hundred twenty-three".