22196145409 has 2 divisors, whose sum is σ = 22196145410. Its totient is φ = 22196145408.

The previous prime is 22196145407. The next prime is 22196145463. The reversal of 22196145409 is 90454169122.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 13746859009 + 8449286400 = 117247^2 + 91920^2 .

It is a cyclic number.

It is not a de Polignac number, because 22196145409 - 2¹ = 22196145407 is a prime.

Together with 22196145407, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (22196145407) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11098072704 + 11098072705.

It is an arithmetic number, because the mean of its divisors is an integer number (11098072705).

Almost surely, 2^22196145409 is an apocalyptic number.

It is an amenable number.

22196145409 is a deficient number, since it is larger than the sum of its proper divisors (1).

22196145409 is an equidigital number, since it uses as much as digits as its factorization.

22196145409 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 155520, while the sum is 43.

The spelling of 22196145409 in words is "twenty-two billion, one hundred ninety-six million, one hundred forty-five thousand, four hundred nine".