20120012209 has 8 divisors (see below), whose sum is σ = 23104320480. Its totient is φ = 17328240000.

The previous prime is 20120012207. The next prime is 20120012219. The reversal of 20120012209 is 90221002102.

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 20120012209 - 2¹ = 20120012207 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20120012201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 48133792 + ... + 48134209.

It is an arithmetic number, because the mean of its divisors is an integer number (2888040060).

Almost surely, 2^20120012209 is an apocalyptic number.

It is an amenable number.

20120012209 is a deficient number, since it is larger than the sum of its proper divisors (2984308271).

20120012209 is a wasteful number, since it uses less digits than its factorization.

20120012209 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 96268031.

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

The spelling of 20120012209 in words is "twenty billion, one hundred twenty million, twelve thousand, two hundred nine".