22510109 has 2 divisors, whose sum is σ = 22510110. Its totient is φ = 22510108.

The previous prime is 22510099. The next prime is 22510121. The reversal of 22510109 is 90101522.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 21187609 + 1322500 = 4603^2 + 1150^2 .

It is a cyclic number.

It is not a de Polignac number, because 22510109 - 2²⁰ = 21461533 is a prime.

It is equal to p_1419230 and since 22510109 and 1419230 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22510129) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11255054 + 11255055.

It is an arithmetic number, because the mean of its divisors is an integer number (11255055).

Almost surely, 2^22510109 is an apocalyptic number.

It is an amenable number.

22510109 is a deficient number, since it is larger than the sum of its proper divisors (1).

22510109 is an equidigital number, since it uses as much as digits as its factorization.

22510109 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 180, while the sum is 20.

The square root of 22510109 is about 4744.4819527531. The cubic root of 22510109 is about 282.3530820371.

The spelling of 22510109 in words is "twenty-two million, five hundred ten thousand, one hundred nine".