12068999881 has 3 divisors (see below), whose sum is σ = 12069109741. Its totient is φ = 12068890022.

The previous prime is 12068999869. The next prime is 12068999911. The reversal of 12068999881 is 18899986021.

The square root of 12068999881 is 109859.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is not a de Polignac number, because 12068999881 - 2¹³ = 12068991689 is a prime.

It is a super-2 number, since 2×12068999881² (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 (12068999381) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 54930 + ... + 164788.

Almost surely, 2^12068999881 is an apocalyptic number.

12068999881 is the 109859-th square number.

12068999881 is the 54930-th centered octagonal number.

It is an amenable number.

12068999881 is a deficient number, since it is larger than the sum of its proper divisors (109860).

12068999881 is an frugal number, since it uses more digits than its factorization.

12068999881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 219718 (or 109859 counting only the distinct ones).

The product of its (nonzero) digits is 4478976, while the sum is 61.

The spelling of 12068999881 in words is "twelve billion, sixty-eight million, nine hundred ninety-nine thousand, eight hundred eighty-one".