1222220303320 has 128 divisors (see below), whose sum is σ = 3004259155200. Its totient is φ = 445732724736.

The previous prime is 1222220303281. The next prime is 1222220303377. The reversal of 1222220303320 is 233030222221.

It is a junction number, because it is equal to n+sod(n) for n = 1222220303291 and 1222220303300.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2632522 + ... + 3061798.

It is an arithmetic number, because the mean of its divisors is an integer number (23470774650).

Almost surely, 2^{1222220303320} is an apocalyptic number.

1222220303320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1222220303320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1502129577600).

1222220303320 is an abundant number, since it is smaller than the sum of its proper divisors (1782038851880).

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

1222220303320 is a wasteful number, since it uses less digits than its factorization.

1222220303320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 429437 (or 429433 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 22.

Adding to 1222220303320 its reverse (233030222221), we get a palindrome (1455250525541).

The spelling of 1222220303320 in words is "one trillion, two hundred twenty-two billion, two hundred twenty million, three hundred three thousand, three hundred twenty".