12001273206 has 16 divisors (see below), whose sum is σ = 25848896304. Its totient is φ = 3692699424.

The previous prime is 12001273171. The next prime is 12001273217. The reversal of 12001273206 is 60237210021.

It is a congruent number.

It is an unprimeable number.

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, 76931161 + ... + 76931316.

It is an arithmetic number, because the mean of its divisors is an integer number (1615556019).

Almost surely, 2^12001273206 is an apocalyptic number.

12001273206 is an abundant number, since it is smaller than the sum of its proper divisors (13847623098).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12001273206 is a wasteful number, since it uses less digits than its factorization.

12001273206 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 153862495.

The product of its (nonzero) digits is 1008, while the sum is 24.

Adding to 12001273206 its reverse (60237210021), we get a palindrome (72238483227).

It can be divided in two parts, 1200 and 1273206, that added together give a triangular number (1274406 = T₁₅₉₆).

The spelling of 12001273206 in words is "twelve billion, one million, two hundred seventy-three thousand, two hundred six".