20221012009 has 16 divisors (see below), whose sum is σ = 22263515136. Its totient is φ = 18212947200.

The previous prime is 20221011973. The next prime is 20221012013. The reversal of 20221012009 is 90021012202.

It is a cyclic number.

It is not a de Polignac number, because 20221012009 - 2¹¹ = 20221009961 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20221012039) 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 in 15 ways as a sum of consecutive naturals, for example, 1047969 + ... + 1067089.

It is an arithmetic number, because the mean of its divisors is an integer number (1391469696).

Almost surely, 2^20221012009 is an apocalyptic number.

It is an amenable number.

20221012009 is a deficient number, since it is larger than the sum of its proper divisors (2042503127).

20221012009 is a wasteful number, since it uses less digits than its factorization.

20221012009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20016.

The product of its (nonzero) digits is 144, while the sum is 19.

The spelling of 20221012009 in words is "twenty billion, two hundred twenty-one million, twelve thousand, nine".