12220211220320 has 48 divisors (see below), whose sum is σ = 28991045119680. Its totient is φ = 4867632236544.

The previous prime is 12220211220277. The next prime is 12220211220353. The reversal of 12220211220320 is 2302211202221.

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 = 12220211220292 and 12220211220301.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 159744857 + ... + 159821336.

It is an arithmetic number, because the mean of its divisors is an integer number (603980106660).

Almost surely, 2^{12220211220320} is an apocalyptic number.

12220211220320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12220211220320 is an abundant number, since it is smaller than the sum of its proper divisors (16770833899360).

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

12220211220320 is a wasteful number, since it uses less digits than its factorization.

12220211220320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 319566447 (or 319566439 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 20.

Adding to 12220211220320 its reverse (2302211202221), we get a palindrome (14522422422541).

The spelling of 12220211220320 in words is "twelve trillion, two hundred twenty billion, two hundred eleven million, two hundred twenty thousand, three hundred twenty".