22109077 has 2 divisors, whose sum is σ = 22109078. Its totient is φ = 22109076.

The previous prime is 22109069. The next prime is 22109081. The reversal of 22109077 is 77090122.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 13024881 + 9084196 = 3609^2 + 3014^2 .

It is a cyclic number.

It is not a de Polignac number, because 22109077 - 2³ = 22109069 is a prime.

It is a super-2 number, since 2×22109077² = 977622571583858, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22109057) 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, 11054538 + 11054539.

It is an arithmetic number, because the mean of its divisors is an integer number (11054539).

Almost surely, 2^22109077 is an apocalyptic number.

It is an amenable number.

22109077 is a deficient number, since it is larger than the sum of its proper divisors (1).

22109077 is an equidigital number, since it uses as much as digits as its factorization.

22109077 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1764, while the sum is 28.

The square root of 22109077 is about 4702.0290301103. The cubic root of 22109077 is about 280.6662577752. Note that the first 3 decimals are identical.

Adding to 22109077 its reverse (77090122), we get a palindrome (99199199).

The spelling of 22109077 in words is "twenty-two million, one hundred nine thousand, seventy-seven".