22075181 has 2 divisors, whose sum is σ = 22075182. Its totient is φ = 22075180.

The previous prime is 22075171. The next prime is 22075187. The reversal of 22075181 is 18157022.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 20884900 + 1190281 = 4570^2 + 1091^2 .

It is a cyclic number.

It is not a de Polignac number, because 22075181 - 2⁶ = 22075117 is a prime.

It is a super-2 number, since 2×22075181² = 974627232365522, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 22075181.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22075187) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11037590 + 11037591.

It is an arithmetic number, because the mean of its divisors is an integer number (11037591).

Almost surely, 2^22075181 is an apocalyptic number.

It is an amenable number.

22075181 is a deficient number, since it is larger than the sum of its proper divisors (1).

22075181 is an equidigital number, since it uses as much as digits as its factorization.

22075181 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1120, while the sum is 26.

The square root of 22075181 is about 4698.4232461540. The cubic root of 22075181 is about 280.5227521704.

The spelling of 22075181 in words is "twenty-two million, seventy-five thousand, one hundred eighty-one".