12221032131012 has 12 divisors (see below), whose sum is σ = 28515741639056. Its totient is φ = 4073677377000.

The previous prime is 12221032130981. The next prime is 12221032131079. The reversal of 12221032131012 is 21013123012221.

It is a tau number, because it is divible by the number of its divisors (12).

It is a self number, because there is not a number n which added to its sum of digits gives 12221032131012.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 509209672114 + ... + 509209672137.

Almost surely, 2^{12221032131012} is an apocalyptic number.

12221032131012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

12221032131012 is an abundant number, since it is smaller than the sum of its proper divisors (16294709508044).

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

12221032131012 is a wasteful number, since it uses less digits than its factorization.

12221032131012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1018419344258 (or 1018419344256 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 21.

Adding to 12221032131012 its reverse (21013123012221), we get a palindrome (33234155143233).

The spelling of 12221032131012 in words is "twelve trillion, two hundred twenty-one billion, thirty-two million, one hundred thirty-one thousand, twelve".