12876821107 has 2 divisors, whose sum is σ = 12876821108. Its totient is φ = 12876821106.

The previous prime is 12876821051. The next prime is 12876821131. The reversal of 12876821107 is 70112867821.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12876821107 is a prime.

It is not a weakly prime, because it can be changed into another prime (12876821407) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6438410553 + 6438410554.

It is an arithmetic number, because the mean of its divisors is an integer number (6438410554).

Almost surely, 2^12876821107 is an apocalyptic number.

12876821107 is a deficient number, since it is larger than the sum of its proper divisors (1).

12876821107 is an equidigital number, since it uses as much as digits as its factorization.

12876821107 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 75264, while the sum is 43.

The spelling of 12876821107 in words is "twelve billion, eight hundred seventy-six million, eight hundred twenty-one thousand, one hundred seven".