22012221209 has 8 divisors (see below), whose sum is σ = 24069052800. Its totient is φ = 19964676400.

The previous prime is 22012221193. The next prime is 22012221211. The reversal of 22012221209 is 90212221022.

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

It is a cyclic number.

It is not a de Polignac number, because 22012221209 - 2⁴ = 22012221193 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22012229209) 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, 2316734 + ... + 2326215.

It is an arithmetic number, because the mean of its divisors is an integer number (3008631600).

Almost surely, 2^22012221209 is an apocalyptic number.

It is an amenable number.

22012221209 is a deficient number, since it is larger than the sum of its proper divisors (2056831591).

22012221209 is a wasteful number, since it uses less digits than its factorization.

22012221209 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4643391.

The product of its (nonzero) digits is 576, while the sum is 23.

The spelling of 22012221209 in words is "twenty-two billion, twelve million, two hundred twenty-one thousand, two hundred nine".