20012111206 has 8 divisors (see below), whose sum is σ = 30018957840. Its totient is φ = 10005791928.

The previous prime is 20012111201. The next prime is 20012111261. The reversal of 20012111206 is 60211121002.

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

It is a self number, because there is not a number n which added to its sum of digits gives 20012111206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20012111201) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16941 + ... + 200776.

It is an arithmetic number, because the mean of its divisors is an integer number (3752369730).

Almost surely, 2^20012111206 is an apocalyptic number.

20012111206 is a deficient number, since it is larger than the sum of its proper divisors (10006846634).

20012111206 is a wasteful number, since it uses less digits than its factorization.

20012111206 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 263678.

The product of its (nonzero) digits is 48, while the sum is 16.

Adding to 20012111206 its reverse (60211121002), we get a palindrome (80223232208).

The spelling of 20012111206 in words is "twenty billion, twelve million, one hundred eleven thousand, two hundred six".