22228379209 has 2 divisors, whose sum is σ = 22228379210. Its totient is φ = 22228379208.

The previous prime is 22228379137. The next prime is 22228379227. The reversal of 22228379209 is 90297382222.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 15306638400 + 6921740809 = 123720^2 + 83197^2 .

It is a cyclic number.

It is not a de Polignac number, because 22228379209 - 2⁷ = 22228379081 is a prime.

It is not a weakly prime, because it can be changed into another prime (22228379249) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11114189604 + 11114189605.

It is an arithmetic number, because the mean of its divisors is an integer number (11114189605).

Almost surely, 2^22228379209 is an apocalyptic number.

It is an amenable number.

22228379209 is a deficient number, since it is larger than the sum of its proper divisors (1).

22228379209 is an equidigital number, since it uses as much as digits as its factorization.

22228379209 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 435456, while the sum is 46.

The spelling of 22228379209 in words is "twenty-two billion, two hundred twenty-eight million, three hundred seventy-nine thousand, two hundred nine".