12021323020220 has 48 divisors (see below), whose sum is σ = 25286467248000. Its totient is φ = 4800595026240.

The previous prime is 12021323020193. The next prime is 12021323020237. The reversal of 12021323020220 is 2202032312021.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 12021323020192 and 12021323020201.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 29281931 + ... + 29689629.

It is an arithmetic number, because the mean of its divisors is an integer number (526801401000).

Almost surely, 2^{12021323020220} is an apocalyptic number.

12021323020220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12021323020220 is an abundant number, since it is smaller than the sum of its proper divisors (13265144227780).

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

12021323020220 is a wasteful number, since it uses less digits than its factorization.

12021323020220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 410138 (or 410136 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 20.

Adding to 12021323020220 its reverse (2202032312021), we get a palindrome (14223355332241).

The spelling of 12021323020220 in words is "twelve trillion, twenty-one billion, three hundred twenty-three million, twenty thousand, two hundred twenty".