12021311023320 has 32 divisors (see below), whose sum is σ = 36063933070320. Its totient is φ = 3205682939520.

The previous prime is 12021311023291. The next prime is 12021311023321. The reversal of 12021311023320 is 2332011312021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12021311023321) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 50088795811 + ... + 50088796050.

Almost surely, 2^{12021311023320} is an apocalyptic number.

12021311023320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12021311023320 is an abundant number, since it is smaller than the sum of its proper divisors (24042622047000).

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

12021311023320 is a wasteful number, since it uses less digits than its factorization.

12021311023320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100177591875 (or 100177591871 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 21.

Adding to 12021311023320 its reverse (2332011312021), we get a palindrome (14353322335341).

The spelling of 12021311023320 in words is "twelve trillion, twenty-one billion, three hundred eleven million, twenty-three thousand, three hundred twenty".