12011221566102 has 16 divisors (see below), whose sum is σ = 26206301598912. Its totient is φ = 3639764110920.

The previous prime is 12011221566101. The next prime is 12011221566131. The reversal of 12011221566102 is 20166512211021.

It is a self number, because there is not a number n which added to its sum of digits gives 12011221566102.

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

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 90994102708 + ... + 90994102839.

It is an arithmetic number, because the mean of its divisors is an integer number (1637893849932).

Almost surely, 2^{12011221566102} is an apocalyptic number.

12011221566102 is an abundant number, since it is smaller than the sum of its proper divisors (14195080032810).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12011221566102 is a wasteful number, since it uses less digits than its factorization.

12011221566102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 181988205563.

The product of its (nonzero) digits is 2880, while the sum is 30.

Adding to 12011221566102 its reverse (20166512211021), we get a palindrome (32177733777123).

The spelling of 12011221566102 in words is "twelve trillion, eleven billion, two hundred twenty-one million, five hundred sixty-six thousand, one hundred two".