12272122273 has 4 divisors (see below), whose sum is σ = 12315795588. Its totient is φ = 12228448960.

The previous prime is 12272122271. The next prime is 12272122277. The reversal of 12272122273 is 37222127221.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 9899653009 + 2372469264 = 99497^2 + 48708^2 .

It is a cyclic number.

It is not a de Polignac number, because 12272122273 - 2¹ = 12272122271 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12272122271) 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, 21836236 + ... + 21836797.

It is an arithmetic number, because the mean of its divisors is an integer number (3078948897).

Almost surely, 2^12272122273 is an apocalyptic number.

It is an amenable number.

12272122273 is a deficient number, since it is larger than the sum of its proper divisors (43673315).

12272122273 is an equidigital number, since it uses as much as digits as its factorization.

12272122273 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43673314.

The product of its digits is 9408, while the sum is 31.

Adding to 12272122273 its reverse (37222127221), we get a palindrome (49494249494).

The spelling of 12272122273 in words is "twelve billion, two hundred seventy-two million, one hundred twenty-two thousand, two hundred seventy-three".