22000209971 has 2 divisors, whose sum is σ = 22000209972. Its totient is φ = 22000209970.

The previous prime is 22000209943. The next prime is 22000209977. The reversal of 22000209971 is 17990200022.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22000209971 is a prime.

It is not a weakly prime, because it can be changed into another prime (22000209977) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11000104985 + 11000104986.

It is an arithmetic number, because the mean of its divisors is an integer number (11000104986).

Almost surely, 2^22000209971 is an apocalyptic number.

22000209971 is a deficient number, since it is larger than the sum of its proper divisors (1).

22000209971 is an equidigital number, since it uses as much as digits as its factorization.

22000209971 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4536, while the sum is 32.

Adding to 22000209971 its reverse (17990200022), we get a palindrome (39990409993).

The spelling of 22000209971 in words is "twenty-two billion, two hundred nine thousand, nine hundred seventy-one".