22129009 has 8 divisors (see below), whose sum is σ = 26106368. Its totient is φ = 18355680.

The previous prime is 22129007. The next prime is 22129021. The reversal of 22129009 is 90092122.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 22129009 - 2¹ = 22129007 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22129007) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 50772 + ... + 51205.

It is an arithmetic number, because the mean of its divisors is an integer number (3263296).

Almost surely, 2^22129009 is an apocalyptic number.

It is an amenable number.

22129009 is a deficient number, since it is larger than the sum of its proper divisors (3977359).

22129009 is a wasteful number, since it uses less digits than its factorization.

22129009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102015.

The product of its (nonzero) digits is 648, while the sum is 25.

The square root of 22129009 is about 4704.1480631460. The cubic root of 22129009 is about 280.7505754752.

The spelling of 22129009 in words is "twenty-two million, one hundred twenty-nine thousand, nine".