12120221021012 has 36 divisors (see below), whose sum is σ = 22968187552800. Its totient is φ = 5593771022112.

The previous prime is 12120221021011. The next prime is 12120221021059. The reversal of 12120221021012 is 21012012202121.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12120221021011) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 22421489 + ... + 22955687.

It is an arithmetic number, because the mean of its divisors is an integer number (638005209800).

Almost surely, 2^{12120221021012} is an apocalyptic number.

It is an amenable number.

12120221021012 is a deficient number, since it is larger than the sum of its proper divisors (10847966531788).

12120221021012 is a wasteful number, since it uses less digits than its factorization.

12120221021012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 567792 (or 567777 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 12120221021012 its reverse (21012012202121), we get a palindrome (33132233223133).

The spelling of 12120221021012 in words is "twelve trillion, one hundred twenty billion, two hundred twenty-one million, twenty-one thousand, twelve".