22221209999 has 2 divisors, whose sum is σ = 22221210000. Its totient is φ = 22221209998.

The previous prime is 22221209993. The next prime is 22221210007. The reversal of 22221209999 is 99990212222.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 22221209999 - 2³² = 17926242703 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22221209993) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11110604999 + 11110605000.

It is an arithmetic number, because the mean of its divisors is an integer number (11110605000).

Almost surely, 2^22221209999 is an apocalyptic number.

22221209999 is a deficient number, since it is larger than the sum of its proper divisors (1).

22221209999 is an equidigital number, since it uses as much as digits as its factorization.

22221209999 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 209952, while the sum is 47.

The spelling of 22221209999 in words is "twenty-two billion, two hundred twenty-one million, two hundred nine thousand, nine hundred ninety-nine".