12993472222649 has 2 divisors, whose sum is σ = 12993472222650. Its totient is φ = 12993472222648.

The previous prime is 12993472222603. The next prime is 12993472222697. The reversal of 12993472222649 is 94622227439921.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12392371278400 + 601100944249 = 3520280^2 + 775307^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12993472222649 is a prime.

It is a super-2 number, since 2×12993472222649² (a number of 27 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 12993472222591 and 12993472222600.

It is not a weakly prime, because it can be changed into another prime (12993472222699) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6496736111324 + 6496736111325.

It is an arithmetic number, because the mean of its divisors is an integer number (6496736111325).

Almost surely, 2^{12993472222649} is an apocalyptic number.

It is an amenable number.

12993472222649 is a deficient number, since it is larger than the sum of its proper divisors (1).

12993472222649 is an equidigital number, since it uses as much as digits as its factorization.

12993472222649 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 47029248, while the sum is 62.

The spelling of 12993472222649 in words is "twelve trillion, nine hundred ninety-three billion, four hundred seventy-two million, two hundred twenty-two thousand, six hundred forty-nine".