20120212122009 has 8 divisors (see below), whose sum is σ = 26826971399040. Its totient is φ = 13413463796496.

The previous prime is 20120212121981. The next prime is 20120212122011. The reversal of 20120212122009 is 90022121202102.

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

It is not a de Polignac number, because 20120212122009 - 2⁹ = 20120212121497 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20120212122009.

It is not an unprimeable number, because it can be changed into a prime (20120212172009) 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, 3735327 + ... + 7361595.

It is an arithmetic number, because the mean of its divisors is an integer number (3353371424880).

Almost surely, 2^{20120212122009} is an apocalyptic number.

It is an amenable number.

20120212122009 is a deficient number, since it is larger than the sum of its proper divisors (6706759277031).

20120212122009 is a wasteful number, since it uses less digits than its factorization.

20120212122009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5475759.

The product of its (nonzero) digits is 576, while the sum is 24.

The spelling of 20120212122009 in words is "twenty trillion, one hundred twenty billion, two hundred twelve million, one hundred twenty-two thousand, nine".