12212021021020 has 12 divisors (see below), whose sum is σ = 25645244144184. Its totient is φ = 4884808408400.

The previous prime is 12212021020999. The next prime is 12212021021051. The reversal of 12212021021020 is 2012012021221.

It is a happy number.

12212021021020 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 12212021020985 and 12212021021003.

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, 305300525506 + ... + 305300525545.

It is an arithmetic number, because the mean of its divisors is an integer number (2137103678682).

Almost surely, 2^{12212021021020} is an apocalyptic number.

12212021021020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12212021021020 is an abundant number, since it is smaller than the sum of its proper divisors (13433223123164).

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

12212021021020 is a wasteful number, since it uses less digits than its factorization.

12212021021020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 610601051060 (or 610601051058 counting only the distinct ones).

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

Adding to 12212021021020 its reverse (2012012021221), we get a palindrome (14224033042241).

The spelling of 12212021021020 in words is "twelve trillion, two hundred twelve billion, twenty-one million, twenty-one thousand, twenty".