12051021206 has 16 divisors (see below), whose sum is σ = 21746204160. Its totient is φ = 4892895720.

The previous prime is 12051021167. The next prime is 12051021209. The reversal of 12051021206 is 60212015021.

It is a super-2 number, since 2×12051021206² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12051021209) 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, 22652030 + ... + 22652561.

It is an arithmetic number, because the mean of its divisors is an integer number (1359137760).

Almost surely, 2^12051021206 is an apocalyptic number.

12051021206 is a deficient number, since it is larger than the sum of its proper divisors (9695182954).

12051021206 is a wasteful number, since it uses less digits than its factorization.

12051021206 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45304619.

The product of its (nonzero) digits is 240, while the sum is 20.

Adding to 12051021206 its reverse (60212015021), we get a palindrome (72263036227).

The spelling of 12051021206 in words is "twelve billion, fifty-one million, twenty-one thousand, two hundred six".