22443314021 has 2 divisors, whose sum is σ = 22443314022. Its totient is φ = 22443314020.

The previous prime is 22443314011. The next prime is 22443314039. The reversal of 22443314021 is 12041334422.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 14073076900 + 8370237121 = 118630^2 + 91489^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22443314021 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22443314011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11221657010 + 11221657011.

It is an arithmetic number, because the mean of its divisors is an integer number (11221657011).

Almost surely, 2^22443314021 is an apocalyptic number.

It is an amenable number.

22443314021 is a deficient number, since it is larger than the sum of its proper divisors (1).

22443314021 is an equidigital number, since it uses as much as digits as its factorization.

22443314021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4608, while the sum is 26.

Adding to 22443314021 its reverse (12041334422), we get a palindrome (34484648443).

The spelling of 22443314021 in words is "twenty-two billion, four hundred forty-three million, three hundred fourteen thousand, twenty-one".