12021021302120 has 32 divisors (see below), whose sum is σ = 27351200161800. Its totient is φ = 4754381457408.

The previous prime is 12021021302107. The next prime is 12021021302161. The reversal of 12021021302120 is 2120312012021.

It can be written as a sum of positive squares in 4 ways, for example, as 8939992360324 + 3081028941796 = 2989982^2 + 1755286^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1688342129 + ... + 1688349248.

Almost surely, 2^{12021021302120} is an apocalyptic number.

12021021302120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12021021302120 is an abundant number, since it is smaller than the sum of its proper divisors (15330178859680).

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

12021021302120 is a wasteful number, since it uses less digits than its factorization.

12021021302120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3376691477 (or 3376691473 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 17.

Adding to 12021021302120 its reverse (2120312012021), we get a palindrome (14141333314141).

The spelling of 12021021302120 in words is "twelve trillion, twenty-one billion, twenty-one million, three hundred two thousand, one hundred twenty".