22159229 has 4 divisors (see below), whose sum is σ = 22699740. Its totient is φ = 21618720.

The previous prime is 22159217. The next prime is 22159237. The reversal of 22159229 is 92295122.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 10903204 + 11256025 = 3302^2 + 3355^2 .

It is a cyclic number.

It is not a de Polignac number, because 22159229 - 2⁴ = 22159213 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 22159195 and 22159204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22159259) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 270194 + ... + 270275.

It is an arithmetic number, because the mean of its divisors is an integer number (5674935).

Almost surely, 2^22159229 is an apocalyptic number.

It is an amenable number.

22159229 is a deficient number, since it is larger than the sum of its proper divisors (540511).

22159229 is an equidigital number, since it uses as much as digits as its factorization.

22159229 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 540510.

The product of its digits is 6480, while the sum is 32.

The square root of 22159229 is about 4707.3590260357. The cubic root of 22159229 is about 280.8783176498.

The spelling of 22159229 in words is "twenty-two million, one hundred fifty-nine thousand, two hundred twenty-nine".