12007277281 has 2 divisors, whose sum is σ = 12007277282. Its totient is φ = 12007277280.

The previous prime is 12007277279. The next prime is 12007277309. The reversal of 12007277281 is 18277270021.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11959390881 + 47886400 = 109359^2 + 6920^2 .

It is a cyclic number.

It is not a de Polignac number, because 12007277281 - 2¹ = 12007277279 is a prime.

It is a super-2 number, since 2×12007277281² (a number of 21 digits) contains 22 as substring.

Together with 12007277279, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 12007277281.

It is not a weakly prime, because it can be changed into another prime (12007278281) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6003638640 + 6003638641.

It is an arithmetic number, because the mean of its divisors is an integer number (6003638641).

Almost surely, 2^12007277281 is an apocalyptic number.

It is an amenable number.

12007277281 is a deficient number, since it is larger than the sum of its proper divisors (1).

12007277281 is an equidigital number, since it uses as much as digits as its factorization.

12007277281 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 21952, while the sum is 37.

The spelling of 12007277281 in words is "twelve billion, seven million, two hundred seventy-seven thousand, two hundred eighty-one".