12221007271 has 32 divisors (see below), whose sum is σ = 14522112000. Its totient is φ = 10160640000.

The previous prime is 12221007269. The next prime is 12221007283. The reversal of 12221007271 is 17270012221.

It is a cyclic number.

It is not a de Polignac number, because 12221007271 - 2¹ = 12221007269 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12221007571) 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 31 ways as a sum of consecutive naturals, for example, 2906971 + ... + 2911171.

It is an arithmetic number, because the mean of its divisors is an integer number (453816000).

Almost surely, 2^12221007271 is an apocalyptic number.

12221007271 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

12221007271 is a deficient number, since it is larger than the sum of its proper divisors (2301104729).

12221007271 is a wasteful number, since it uses less digits than its factorization.

12221007271 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4711.

The product of its (nonzero) digits is 784, while the sum is 25.

Adding to 12221007271 its reverse (17270012221), we get a palindrome (29491019492).

The spelling of 12221007271 in words is "twelve billion, two hundred twenty-one million, seven thousand, two hundred seventy-one".