22354472009 has 2 divisors, whose sum is σ = 22354472010. Its totient is φ = 22354472008.

The previous prime is 22354471981. The next prime is 22354472039. The reversal of 22354472009 is 90027445322.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 14968788409 + 7385683600 = 122347^2 + 85940^2 .

It is a cyclic number.

It is not a de Polignac number, because 22354472009 - 2⁸ = 22354471753 is a prime.

It is not a weakly prime, because it can be changed into another prime (22354472039) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11177236004 + 11177236005.

It is an arithmetic number, because the mean of its divisors is an integer number (11177236005).

Almost surely, 2^22354472009 is an apocalyptic number.

It is an amenable number.

22354472009 is a deficient number, since it is larger than the sum of its proper divisors (1).

22354472009 is an equidigital number, since it uses as much as digits as its factorization.

22354472009 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 120960, while the sum is 38.

The spelling of 22354472009 in words is "twenty-two billion, three hundred fifty-four million, four hundred seventy-two thousand, nine".