22000020437 has 2 divisors, whose sum is σ = 22000020438. Its totient is φ = 22000020436.

The previous prime is 22000020391. The next prime is 22000020451. The reversal of 22000020437 is 73402000022.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 21901336081 + 98684356 = 147991^2 + 9934^2 .

It is a cyclic number.

It is not a de Polignac number, because 22000020437 - 2⁶ = 22000020373 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22000020457) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11000010218 + 11000010219.

It is an arithmetic number, because the mean of its divisors is an integer number (11000010219).

Almost surely, 2^22000020437 is an apocalyptic number.

It is an amenable number.

22000020437 is a deficient number, since it is larger than the sum of its proper divisors (1).

22000020437 is an equidigital number, since it uses as much as digits as its factorization.

22000020437 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 672, while the sum is 20.

Adding to 22000020437 its reverse (73402000022), we get a palindrome (95402020459).

The spelling of 22000020437 in words is "twenty-two billion, twenty thousand, four hundred thirty-seven".