22004204381 has 2 divisors, whose sum is σ = 22004204382. Its totient is φ = 22004204380.

The previous prime is 22004204377. The next prime is 22004204527. The reversal of 22004204381 is 18340240022.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 19513296100 + 2490908281 = 139690^2 + 49909^2 .

It is a cyclic number.

It is not a de Polignac number, because 22004204381 - 2² = 22004204377 is a prime.

It is a super-2 number, since 2×22004204381² (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 22004204381.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22004204281) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11002102190 + 11002102191.

It is an arithmetic number, because the mean of its divisors is an integer number (11002102191).

Almost surely, 2^22004204381 is an apocalyptic number.

It is an amenable number.

22004204381 is a deficient number, since it is larger than the sum of its proper divisors (1).

22004204381 is an equidigital number, since it uses as much as digits as its factorization.

22004204381 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3072, while the sum is 26.

The spelling of 22004204381 in words is "twenty-two billion, four million, two hundred four thousand, three hundred eighty-one".