1220310323320 has 128 divisors (see below), whose sum is σ = 3030327936000. Its totient is φ = 438590592000.

The previous prime is 1220310323311. The next prime is 1220310323327. The reversal of 1220310323320 is 233230130221.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a junction number, because it is equal to n+sod(n) for n = 1220310323291 and 1220310323300.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1220310323327) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 13175412 + ... + 13267708.

It is an arithmetic number, because the mean of its divisors is an integer number (23674437000).

Almost surely, 2^{1220310323320} is an apocalyptic number.

1220310323320 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 1220310323320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1515163968000).

1220310323320 is an abundant number, since it is smaller than the sum of its proper divisors (1810017612680).

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

1220310323320 is a wasteful number, since it uses less digits than its factorization.

1220310323320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 92669 (or 92665 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 22.

Adding to 1220310323320 its reverse (233230130221), we get a palindrome (1453540453541).

The spelling of 1220310323320 in words is "one trillion, two hundred twenty billion, three hundred ten million, three hundred twenty-three thousand, three hundred twenty".