1220003311320 has 96 divisors (see below), whose sum is σ = 3965409695520. Its totient is φ = 325301483520.

The previous prime is 1220003311199. The next prime is 1220003311369. The reversal of 1220003311320 is 231133000221.

1220003311320 is a `hidden beast` number, since 1 + 2 + 200 + 0 + 331 + 132 + 0 = 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 = 1220003311293 and 1220003311302.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3523560 + ... + 3854280.

It is an arithmetic number, because the mean of its divisors is an integer number (41306350995).

Almost surely, 2^{1220003311320} is an apocalyptic number.

1220003311320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1220003311320 is an abundant number, since it is smaller than the sum of its proper divisors (2745406384200).

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

1220003311320 is a wasteful number, since it uses less digits than its factorization.

1220003311320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 340985 (or 340978 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

Adding to 1220003311320 its reverse (231133000221), we get a palindrome (1451136311541).

The spelling of 1220003311320 in words is "one trillion, two hundred twenty billion, three million, three hundred eleven thousand, three hundred twenty".