22225350991 has 2 divisors, whose sum is σ = 22225350992. Its totient is φ = 22225350990.

The previous prime is 22225350989. The next prime is 22225351033. The reversal of 22225350991 is 19905352222.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 22225350991 - 2¹ = 22225350989 is a prime.

Together with 22225350989, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22225350391) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11112675495 + 11112675496.

It is an arithmetic number, because the mean of its divisors is an integer number (11112675496).

Almost surely, 2^22225350991 is an apocalyptic number.

22225350991 is a deficient number, since it is larger than the sum of its proper divisors (1).

22225350991 is an equidigital number, since it uses as much as digits as its factorization.

22225350991 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 97200, while the sum is 40.

The spelling of 22225350991 in words is "twenty-two billion, two hundred twenty-five million, three hundred fifty thousand, nine hundred ninety-one".