22004422381 has 2 divisors, whose sum is σ = 22004422382. Its totient is φ = 22004422380.

The previous prime is 22004422361. The next prime is 22004422399. The reversal of 22004422381 is 18322440022.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11865744900 + 10138677481 = 108930^2 + 100691^2 .

It is a cyclic number.

It is not a de Polignac number, because 22004422381 - 2¹⁹ = 22003898093 is a prime.

It is a super-2 number, since 2×22004422381² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22004422351) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11002211190 + 11002211191.

It is an arithmetic number, because the mean of its divisors is an integer number (11002211191).

Almost surely, 2^22004422381 is an apocalyptic number.

It is an amenable number.

22004422381 is a deficient number, since it is larger than the sum of its proper divisors (1).

22004422381 is an equidigital number, since it uses as much as digits as its factorization.

22004422381 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6144, while the sum is 28.

The spelling of 22004422381 in words is "twenty-two billion, four million, four hundred twenty-two thousand, three hundred eighty-one".