12107881 has 2 divisors, whose sum is σ = 12107882. Its totient is φ = 12107880.

The previous prime is 12107869. The next prime is 12107891. The reversal of 12107881 is 18870121.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9272025 + 2835856 = 3045^2 + 1684^2 .

It is a cyclic number.

It is not a de Polignac number, because 12107881 - 2¹⁵ = 12075113 is a prime.

It is a super-2 number, since 2×12107881² = 293201564620322, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (12107861) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6053940 + 6053941.

It is an arithmetic number, because the mean of its divisors is an integer number (6053941).

Almost surely, 2^12107881 is an apocalyptic number.

It is an amenable number.

12107881 is a deficient number, since it is larger than the sum of its proper divisors (1).

12107881 is an equidigital number, since it uses as much as digits as its factorization.

12107881 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 896, while the sum is 28.

The square root of 12107881 is about 3479.6380558903. The cubic root of 12107881 is about 229.6268745327.

The spelling of 12107881 in words is "twelve million, one hundred seven thousand, eight hundred eighty-one".