12077338121 has 4 divisors (see below), whose sum is σ = 12081317892. Its totient is φ = 12073358352.

The previous prime is 12077338109. The next prime is 12077338129. The reversal of 12077338121 is 12183377021.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 4366566400 + 7710771721 = 66080^2 + 87811^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12077338121 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (12077338129) 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 3 ways as a sum of consecutive naturals, for example, 1985330 + ... + 1991403.

It is an arithmetic number, because the mean of its divisors is an integer number (3020329473).

Almost surely, 2^12077338121 is an apocalyptic number.

It is an amenable number.

12077338121 is a deficient number, since it is larger than the sum of its proper divisors (3979771).

12077338121 is an equidigital number, since it uses as much as digits as its factorization.

12077338121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3979770.

The product of its (nonzero) digits is 14112, while the sum is 35.

The spelling of 12077338121 in words is "twelve billion, seventy-seven million, three hundred thirty-eight thousand, one hundred twenty-one".