12011221566104 has 16 divisors (see below), whose sum is σ = 22522621185000. Its totient is φ = 6005189250112.

The previous prime is 12011221566101. The next prime is 12011221566131. The reversal of 12011221566104 is 40166512211021.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12011221566101) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 52570502 + ... + 52798485.

Almost surely, 2^{12011221566104} is an apocalyptic number.

It is an amenable number.

12011221566104 is a deficient number, since it is larger than the sum of its proper divisors (10511399618896).

12011221566104 is a wasteful number, since it uses less digits than its factorization.

12011221566104 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105383242 (or 105383238 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 32.

Adding to 12011221566104 its reverse (40166512211021), we get a palindrome (52177733777125).

The spelling of 12011221566104 in words is "twelve trillion, eleven billion, two hundred twenty-one million, five hundred sixty-six thousand, one hundred four".