12012223277 has 2 divisors, whose sum is σ = 12012223278. Its totient is φ = 12012223276.

The previous prime is 12012223259. The next prime is 12012223357. The reversal of 12012223277 is 77232221021.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9632637316 + 2379585961 = 98146^2 + 48781^2 .

It is a cyclic number.

It is not a de Polignac number, because 12012223277 - 2⁸ = 12012223021 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12012243277) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6006111638 + 6006111639.

It is an arithmetic number, because the mean of its divisors is an integer number (6006111639).

Almost surely, 2^12012223277 is an apocalyptic number.

It is an amenable number.

12012223277 is a deficient number, since it is larger than the sum of its proper divisors (1).

12012223277 is an equidigital number, since it uses as much as digits as its factorization.

12012223277 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4704, while the sum is 29.

Adding to 12012223277 its reverse (77232221021), we get a palindrome (89244444298).

The spelling of 12012223277 in words is "twelve billion, twelve million, two hundred twenty-three thousand, two hundred seventy-seven".