12103213081 has 2 divisors, whose sum is σ = 12103213082. Its totient is φ = 12103213080.

The previous prime is 12103213063. The next prime is 12103213127. The reversal of 12103213081 is 18031230121.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11810255625 + 292957456 = 108675^2 + 17116^2 .

It is a cyclic number.

It is not a de Polignac number, because 12103213081 - 2⁵ = 12103213049 is a prime.

It is a super-2 number, since 2×12103213081² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (12103213051) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6051606540 + 6051606541.

It is an arithmetic number, because the mean of its divisors is an integer number (6051606541).

Almost surely, 2^12103213081 is an apocalyptic number.

It is an amenable number.

12103213081 is a deficient number, since it is larger than the sum of its proper divisors (1).

12103213081 is an equidigital number, since it uses as much as digits as its factorization.

12103213081 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 288, while the sum is 22.

The spelling of 12103213081 in words is "twelve billion, one hundred three million, two hundred thirteen thousand, eighty-one".