22012020009 has 24 divisors (see below), whose sum is σ = 36363758912. Its totient is φ = 12569139360.

The previous prime is 22012019999. The next prime is 22012020029. The reversal of 22012020009 is 90002021022.

It is not a de Polignac number, because 22012020009 - 2¹¹ = 22012017961 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 22012019973 and 22012020000.

It is not an unprimeable number, because it can be changed into a prime (22012020029) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 39499 + ... + 213504.

Almost surely, 2^22012020009 is an apocalyptic number.

It is an amenable number.

22012020009 is a deficient number, since it is larger than the sum of its proper divisors (14351738903).

22012020009 is a wasteful number, since it uses less digits than its factorization.

22012020009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 254397 (or 254394 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

The spelling of 22012020009 in words is "twenty-two billion, twelve million, twenty thousand, nine".