12189100061 has 4 divisors (see below), whose sum is σ = 12303016992. Its totient is φ = 12075183132.

The previous prime is 12189100051. The next prime is 12189100073. The reversal of 12189100061 is 16000198121.

12189100061 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: 16000198121 = 139 ⋅115109339.

It is a cyclic number.

It is not a de Polignac number, because 12189100061 - 2¹⁰ = 12189099037 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12189099997 and 12189100033.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12189100051) 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, 56958305 + ... + 56958518.

It is an arithmetic number, because the mean of its divisors is an integer number (3075754248).

Almost surely, 2^12189100061 is an apocalyptic number.

It is an amenable number.

12189100061 is a deficient number, since it is larger than the sum of its proper divisors (113916931).

12189100061 is a wasteful number, since it uses less digits than its factorization.

12189100061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 113916930.

The product of its (nonzero) digits is 864, while the sum is 29.

Adding to 12189100061 its reverse (16000198121), we get a palindrome (28189298182).

The spelling of 12189100061 in words is "twelve billion, one hundred eighty-nine million, one hundred thousand, sixty-one".