22084813 has 2 divisors, whose sum is σ = 22084814. Its totient is φ = 22084812.

The previous prime is 22084793. The next prime is 22084831. The reversal of 22084813 is 31848022.

Together with next prime (22084831) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 21409129 + 675684 = 4627^2 + 822^2 .

It is a cyclic number.

It is not a de Polignac number, because 22084813 - 2¹⁷ = 21953741 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22084873) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11042406 + 11042407.

It is an arithmetic number, because the mean of its divisors is an integer number (11042407).

Almost surely, 2^22084813 is an apocalyptic number.

It is an amenable number.

22084813 is a deficient number, since it is larger than the sum of its proper divisors (1).

22084813 is an equidigital number, since it uses as much as digits as its factorization.

22084813 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3072, while the sum is 28.

The square root of 22084813 is about 4699.4481590927. The cubic root of 22084813 is about 280.5635461321.

It can be divided in two parts, 2208 and 4813, that added together give a triangular number (7021 = T₁₁₈).

The spelling of 22084813 in words is "twenty-two million, eighty-four thousand, eight hundred thirteen".