12884821073 has 2 divisors, whose sum is σ = 12884821074. Its totient is φ = 12884821072.

The previous prime is 12884821031. The next prime is 12884821087. The reversal of 12884821073 is 37012848821.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8689409089 + 4195411984 = 93217^2 + 64772^2 .

It is a cyclic number.

It is not a de Polignac number, because 12884821073 - 2⁶ = 12884821009 is a prime.

It is a super-2 number, since 2×12884821073² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (12884820073) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6442410536 + 6442410537.

It is an arithmetic number, because the mean of its divisors is an integer number (6442410537).

Almost surely, 2^12884821073 is an apocalyptic number.

It is an amenable number.

12884821073 is a deficient number, since it is larger than the sum of its proper divisors (1).

12884821073 is an equidigital number, since it uses as much as digits as its factorization.

12884821073 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 172032, while the sum is 44.

The spelling of 12884821073 in words is "twelve billion, eight hundred eighty-four million, eight hundred twenty-one thousand, seventy-three".