12290078881 has 4 divisors (see below), whose sum is σ = 12293209264. Its totient is φ = 12286948500.

The previous prime is 12290078869. The next prime is 12290078903. The reversal of 12290078881 is 18887009221.

12290078881 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 18887009221 = 10853 ⋅1740257.

It is a cyclic number.

It is not a de Polignac number, because 12290078881 - 2¹⁹ = 12289554593 is a prime.

It is a super-2 number, since 2×12290078881² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12290078831) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1559295 + ... + 1567156.

It is an arithmetic number, because the mean of its divisors is an integer number (3073302316).

Almost surely, 2^12290078881 is an apocalyptic number.

It is an amenable number.

12290078881 is a deficient number, since it is larger than the sum of its proper divisors (3130383).

12290078881 is an equidigital number, since it uses as much as digits as its factorization.

12290078881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3130382.

The product of its (nonzero) digits is 129024, while the sum is 46.

The spelling of 12290078881 in words is "twelve billion, two hundred ninety million, seventy-eight thousand, eight hundred eighty-one".