20020011209 has 8 divisors (see below), whose sum is σ = 21841040352. Its totient is φ = 18199153440.

The previous prime is 20020011199. The next prime is 20020011211. The reversal of 20020011209 is 90211002002.

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 20020011209 - 2¹² = 20020007113 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20020011229) 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 7 ways as a sum of consecutive naturals, for example, 405122 + ... + 451844.

It is an arithmetic number, because the mean of its divisors is an integer number (2730130044).

Almost surely, 2^20020011209 is an apocalyptic number.

It is an amenable number.

20020011209 is a deficient number, since it is larger than the sum of its proper divisors (1821029143).

20020011209 is a wasteful number, since it uses less digits than its factorization.

20020011209 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85687.

The product of its (nonzero) digits is 72, while the sum is 17.

The spelling of 20020011209 in words is "twenty billion, twenty million, eleven thousand, two hundred nine".