12021202112020 has 12 divisors (see below), whose sum is σ = 25244524435284. Its totient is φ = 4808480844800.

The previous prime is 12021202112009. The next prime is 12021202112047. The reversal of 12021202112020 is 2021120212021.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 1522785616144 + 10498416495876 = 1234012^2 + 3240126^2 .

It is a junction number, because it is equal to n+sod(n) for n = 12021202111985 and 12021202112003.

It is a congruent number.

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, 300530052781 + ... + 300530052820.

It is an arithmetic number, because the mean of its divisors is an integer number (2103710369607).

Almost surely, 2^{12021202112020} is an apocalyptic number.

12021202112020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12021202112020 is an abundant number, since it is smaller than the sum of its proper divisors (13223322323264).

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

12021202112020 is a wasteful number, since it uses less digits than its factorization.

12021202112020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 601060105610 (or 601060105608 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 12021202112020 its reverse (2021120212021), we get a palindrome (14042322324041).

The spelling of 12021202112020 in words is "twelve trillion, twenty-one billion, two hundred two million, one hundred twelve thousand, twenty".