12612881 has 2 divisors, whose sum is σ = 12612882. Its totient is φ = 12612880.

The previous prime is 12612851. The next prime is 12612907. The reversal of 12612881 is 18821621.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10627600 + 1985281 = 3260^2 + 1409^2 .

It is a cyclic number.

It is not a de Polignac number, because 12612881 - 2¹⁴ = 12596497 is a prime.

It is a super-2 number, since 2×12612881² = 318169534240322, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (12612851) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6306440 + 6306441.

It is an arithmetic number, because the mean of its divisors is an integer number (6306441).

Almost surely, 2^12612881 is an apocalyptic number.

It is an amenable number.

12612881 is a deficient number, since it is larger than the sum of its proper divisors (1).

12612881 is an equidigital number, since it uses as much as digits as its factorization.

12612881 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1536, while the sum is 29.

The square root of 12612881 is about 3551.4618117051. The cubic root of 12612881 is about 232.7759455333.

The spelling of 12612881 in words is "twelve million, six hundred twelve thousand, eight hundred eighty-one".