22021218943 has 2 divisors, whose sum is σ = 22021218944. Its totient is φ = 22021218942.

The previous prime is 22021218917. The next prime is 22021218949. The reversal of 22021218943 is 34981212022.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 22021218943 - 2⁵ = 22021218911 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 22021218899 and 22021218908.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22021218949) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11010609471 + 11010609472.

It is an arithmetic number, because the mean of its divisors is an integer number (11010609472).

Almost surely, 2^22021218943 is an apocalyptic number.

22021218943 is a deficient number, since it is larger than the sum of its proper divisors (1).

22021218943 is an equidigital number, since it uses as much as digits as its factorization.

22021218943 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 13824, while the sum is 34.

The spelling of 22021218943 in words is "twenty-two billion, twenty-one million, two hundred eighteen thousand, nine hundred forty-three".