12120112021012 has 12 divisors (see below), whose sum is σ = 21210221262580. Its totient is φ = 6060048803136.

The previous prime is 12120112020971. The next prime is 12120112021013. The reversal of 12120112021012 is 21012021102121.

It can be written as a sum of positive squares in 2 ways, for example, as 10308299107716 + 1811812913296 = 3210654^2 + 1346036^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12120112021013) 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, 4212088 + ... + 6479344.

Almost surely, 2^{12120112021012} is an apocalyptic number.

It is an amenable number.

12120112021012 is a deficient number, since it is larger than the sum of its proper divisors (9090109241568).

12120112021012 is a wasteful number, since it uses less digits than its factorization.

12120112021012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3603690 (or 3603688 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 12120112021012 its reverse (21012021102121), we get a palindrome (33132133123133).

The spelling of 12120112021012 in words is "twelve trillion, one hundred twenty billion, one hundred twelve million, twenty-one thousand, twelve".