12021122212020 has 72 divisors (see below), whose sum is σ = 36505366855776. Its totient is φ = 3202002159552.

The previous prime is 12021122212019. The next prime is 12021122212031. The reversal of 12021122212020 is 2021222112021.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 12021122211984 and 12021122212002.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 37657602 + ... + 37975481.

It is an arithmetic number, because the mean of its divisors is an integer number (507018984108).

Almost surely, 2^{12021122212020} is an apocalyptic number.

12021122212020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12021122212020 is an abundant number, since it is smaller than the sum of its proper divisors (24484244643756).

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

12021122212020 is a wasteful number, since it uses less digits than its factorization.

12021122212020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75633981 (or 75633976 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 12021122212020 its reverse (2021222112021), we get a palindrome (14042344324041).

Subtracting from 12021122212020 its reverse (2021222112021), we obtain a palindrome (9999900099999).

The spelling of 12021122212020 in words is "twelve trillion, twenty-one billion, one hundred twenty-two million, two hundred twelve thousand, twenty".