12221320323020 has 12 divisors (see below), whose sum is σ = 25664772678384. Its totient is φ = 4888528129200.

The previous prime is 12221320323019. The next prime is 12221320323031. The reversal of 12221320323020 is 2032302312221.

It is a super-3 number, since 3×12221320323020³ (a number of 40 digits) contains 333 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 305533008056 + ... + 305533008095.

It is an arithmetic number, because the mean of its divisors is an integer number (2138731056532).

Almost surely, 2^{12221320323020} is an apocalyptic number.

12221320323020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12221320323020 is an abundant number, since it is smaller than the sum of its proper divisors (13443452355364).

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

12221320323020 is a wasteful number, since it uses less digits than its factorization.

12221320323020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 611066016160 (or 611066016158 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 23.

Adding to 12221320323020 its reverse (2032302312221), we get a palindrome (14253622635241).

The spelling of 12221320323020 in words is "twelve trillion, two hundred twenty-one billion, three hundred twenty million, three hundred twenty-three thousand, twenty".