12312321220132 has 12 divisors (see below), whose sum is σ = 21559169848860. Its totient is φ = 6152558406176.

The previous prime is 12312321220093. The next prime is 12312321220193. The reversal of 12312321220132 is 23102212321321.

It can be written as a sum of positive squares in 2 ways, for example, as 6502418400256 + 5809902819876 = 2549984^2 + 2410374^2 .

It is a junction number, because it is equal to n+sod(n) for n = 12312321220097 and 12312321220106.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 900543283 + ... + 900556954.

It is an arithmetic number, because the mean of its divisors is an integer number (1796597487405).

Almost surely, 2^{12312321220132} is an apocalyptic number.

It is an amenable number.

12312321220132 is a deficient number, since it is larger than the sum of its proper divisors (9246848628728).

12312321220132 is a wasteful number, since it uses less digits than its factorization.

12312321220132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1801101950 (or 1801101948 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 25.

Adding to 12312321220132 its reverse (23102212321321), we get a palindrome (35414533541453).

The spelling of 12312321220132 in words is "twelve trillion, three hundred twelve billion, three hundred twenty-one million, two hundred twenty thousand, one hundred thirty-two".