12277894512229 has 4 divisors (see below), whose sum is σ = 12609729499084. Its totient is φ = 11946059525376.

The previous prime is 12277894512223. The next prime is 12277894512343. The reversal of 12277894512229 is 92221549877221.

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 4325663711329 + 7952230800900 = 2079823^2 + 2819970^2 .

It is a cyclic number.

It is not a de Polignac number, because 12277894512229 - 2⁹ = 12277894511717 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12277894512223) 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, 165917493372 + ... + 165917493445.

It is an arithmetic number, because the mean of its divisors is an integer number (3152432374771).

Almost surely, 2^{12277894512229} is an apocalyptic number.

It is an amenable number.

12277894512229 is a deficient number, since it is larger than the sum of its proper divisors (331834986855).

12277894512229 is an equidigital number, since it uses as much as digits as its factorization.

12277894512229 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 331834986854.

The product of its digits is 20321280, while the sum is 61.

The spelling of 12277894512229 in words is "twelve trillion, two hundred seventy-seven billion, eight hundred ninety-four million, five hundred twelve thousand, two hundred twenty-nine".