20120211120209 has 8 divisors (see below), whose sum is σ = 21186143375040. Its totient is φ = 19054976242896.

The previous prime is 20120211120187. The next prime is 20120211120211. The reversal of 20120211120209 is 90202111202102.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20120211120209 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20120201120209) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 174285149 + ... + 174400554.

It is an arithmetic number, because the mean of its divisors is an integer number (2648267921880).

Almost surely, 2^{20120211120209} is an apocalyptic number.

It is an amenable number.

20120211120209 is a deficient number, since it is larger than the sum of its proper divisors (1065932254831).

20120211120209 is a wasteful number, since it uses less digits than its factorization.

20120211120209 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 348688759.

The product of its (nonzero) digits is 288, while the sum is 23.

The spelling of 20120211120209 in words is "twenty trillion, one hundred twenty billion, two hundred eleven million, one hundred twenty thousand, two hundred nine".