22123168409 has 2 divisors, whose sum is σ = 22123168410. Its totient is φ = 22123168408.

The previous prime is 22123168357. The next prime is 22123168411. The reversal of 22123168409 is 90486132122.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 13168710025 + 8954458384 = 114755^2 + 94628^2 .

It is a cyclic number.

It is not a de Polignac number, because 22123168409 - 2¹² = 22123164313 is a prime.

Together with 22123168411, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (22123168609) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11061584204 + 11061584205.

It is an arithmetic number, because the mean of its divisors is an integer number (11061584205).

Almost surely, 2^22123168409 is an apocalyptic number.

It is an amenable number.

22123168409 is a deficient number, since it is larger than the sum of its proper divisors (1).

22123168409 is an equidigital number, since it uses as much as digits as its factorization.

22123168409 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 41472, while the sum is 38.

The spelling of 22123168409 in words is "twenty-two billion, one hundred twenty-three million, one hundred sixty-eight thousand, four hundred nine".