22000203809 has 2 divisors, whose sum is σ = 22000203810. Its totient is φ = 22000203808.

The previous prime is 22000203803. The next prime is 22000203833. The reversal of 22000203809 is 90830200022.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11428251409 + 10571952400 = 106903^2 + 102820^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22000203809 is a prime.

It is not a weakly prime, because it can be changed into another prime (22000203803) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11000101904 + 11000101905.

It is an arithmetic number, because the mean of its divisors is an integer number (11000101905).

Almost surely, 2^22000203809 is an apocalyptic number.

It is an amenable number.

22000203809 is a deficient number, since it is larger than the sum of its proper divisors (1).

22000203809 is an equidigital number, since it uses as much as digits as its factorization.

22000203809 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1728, while the sum is 26.

The spelling of 22000203809 in words is "twenty-two billion, two hundred three thousand, eight hundred nine".