12121123222020 has 24 divisors (see below), whose sum is σ = 33939145021824. Its totient is φ = 3232299525856.

The previous prime is 12121123222007. The next prime is 12121123222027. The reversal of 12121123222020 is 2022232112121.

It is not an unprimeable number, because it can be changed into a prime (12121123222027) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 101009360124 + ... + 101009360243.

It is an arithmetic number, because the mean of its divisors is an integer number (1414131042576).

Almost surely, 2^{12121123222020} is an apocalyptic number.

12121123222020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12121123222020 is an abundant number, since it is smaller than the sum of its proper divisors (21818021799804).

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

12121123222020 is a wasteful number, since it uses less digits than its factorization.

12121123222020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 202018720379 (or 202018720377 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 21.

Adding to 12121123222020 its reverse (2022232112121), we get a palindrome (14143355334141).

The spelling of 12121123222020 in words is "twelve trillion, one hundred twenty-one billion, one hundred twenty-three million, two hundred twenty-two thousand, twenty".