12131211221132 has 6 divisors (see below), whose sum is σ = 21229619636988. Its totient is φ = 6065605610564.

The previous prime is 12131211221131. The next prime is 12131211221159. The reversal of 12131211221132 is 23112211213121.

It is a super-2 number, since 2×12131211221132² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 12131211221098 and 12131211221107.

It is not an unprimeable number, because it can be changed into a prime (12131211221131) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1516401402638 + ... + 1516401402645.

It is an arithmetic number, because the mean of its divisors is an integer number (3538269939498).

Almost surely, 2^{12131211221132} is an apocalyptic number.

It is an amenable number.

12131211221132 is a deficient number, since it is larger than the sum of its proper divisors (9098408415856).

12131211221132 is a wasteful number, since it uses less digits than its factorization.

12131211221132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3032802805287 (or 3032802805285 counting only the distinct ones).

The product of its digits is 288, while the sum is 23.

Adding to 12131211221132 its reverse (23112211213121), we get a palindrome (35243422434253).

The spelling of 12131211221132 in words is "twelve trillion, one hundred thirty-one billion, two hundred eleven million, two hundred twenty-one thousand, one hundred thirty-two".