12221000203320 has 80 divisors (see below), whose sum is σ = 41076139583160. Its totient is φ = 3258933386688.

The previous prime is 12221000203271. The next prime is 12221000203337. The reversal of 12221000203320 is 2330200012221.

12221000203320 is a `hidden beast` number, since 1 + 222 + 100 + 0 + 20 + 3 + 320 = 666.

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 = 12221000203293 and 12221000203302.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 1885953582 + ... + 1885960061.

Almost surely, 2^{12221000203320} is an apocalyptic number.

12221000203320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12221000203320 is an abundant number, since it is smaller than the sum of its proper divisors (28855139379840).

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

12221000203320 is a wasteful number, since it uses less digits than its factorization.

12221000203320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3771913666 (or 3771913653 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

Adding to 12221000203320 its reverse (2330200012221), we get a palindrome (14551200215541).

The spelling of 12221000203320 in words is "twelve trillion, two hundred twenty-one billion, two hundred three thousand, three hundred twenty".