22109307 has 16 divisors (see below), whose sum is σ = 32495232. Its totient is φ = 13259520.

The previous prime is 22109287. The next prime is 22109341. The reversal of 22109307 is 70390122.

It is not a de Polignac number, because 22109307 - 2⁸ = 22109051 is a prime.

It is not an unprimeable number, because it can be changed into a prime (22109377) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 253 + ... + 6654.

It is an arithmetic number, because the mean of its divisors is an integer number (2030952).

Almost surely, 2^22109307 is an apocalyptic number.

22109307 is a deficient number, since it is larger than the sum of its proper divisors (10385925).

22109307 is a wasteful number, since it uses less digits than its factorization.

22109307 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7018.

The product of its (nonzero) digits is 756, while the sum is 24.

The square root of 22109307 is about 4702.0534875733. The cubic root of 22109307 is about 280.6672310258.

Adding to 22109307 its reverse (70390122), we get a palindrome (92499429).

The spelling of 22109307 in words is "twenty-two million, one hundred nine thousand, three hundred seven".