21422022443 has 2 divisors, whose sum is σ = 21422022444. Its totient is φ = 21422022442.

The previous prime is 21422022379. The next prime is 21422022481. The reversal of 21422022443 is 34422022412.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 21422022443 - 2⁶ = 21422022379 is a prime.

It is not a weakly prime, because it can be changed into another prime (21422022043) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10711011221 + 10711011222.

It is an arithmetic number, because the mean of its divisors is an integer number (10711011222).

Almost surely, 2^21422022443 is an apocalyptic number.

21422022443 is a deficient number, since it is larger than the sum of its proper divisors (1).

21422022443 is an equidigital number, since it uses as much as digits as its factorization.

21422022443 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6144, while the sum is 26.

Adding to 21422022443 its reverse (34422022412), we get a palindrome (55844044855).

The spelling of 21422022443 in words is "twenty-one billion, four hundred twenty-two million, twenty-two thousand, four hundred forty-three".