22005249481 has 2 divisors, whose sum is σ = 22005249482. Its totient is φ = 22005249480.

The previous prime is 22005249443. The next prime is 22005249493. The reversal of 22005249481 is 18494250022.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 21347839881 + 657409600 = 146109^2 + 25640^2 .

It is a cyclic number.

It is not a de Polignac number, because 22005249481 - 2¹³ = 22005241289 is a prime.

It is a super-2 number, since 2×22005249481² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 22005249481.

It is not a weakly prime, because it can be changed into another prime (22005249881) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11002624740 + 11002624741.

It is an arithmetic number, because the mean of its divisors is an integer number (11002624741).

Almost surely, 2^22005249481 is an apocalyptic number.

It is an amenable number.

22005249481 is a deficient number, since it is larger than the sum of its proper divisors (1).

22005249481 is an equidigital number, since it uses as much as digits as its factorization.

22005249481 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 46080, while the sum is 37.

The spelling of 22005249481 in words is "twenty-two billion, five million, two hundred forty-nine thousand, four hundred eighty-one".