1320120302220 has 72 divisors (see below), whose sum is σ = 4010497532496. Its totient is φ = 351492949632.

The previous prime is 1320120302177. The next prime is 1320120302269. The reversal of 1320120302220 is 222030210231.

1320120302220 is a `hidden beast` number, since 1 + 3 + 20 + 120 + 302 + 220 = 666.

It is a super-2 number, since 2×1320120302220² (a number of 25 digits) contains 22 as substring.

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 = 1320120302193 and 1320120302202.

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, 5498082 + ... + 5733161.

It is an arithmetic number, because the mean of its divisors is an integer number (55701354618).

Almost surely, 2^{1320120302220} is an apocalyptic number.

1320120302220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1320120302220 is an abundant number, since it is smaller than the sum of its proper divisors (2690377230276).

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

1320120302220 is a wasteful number, since it uses less digits than its factorization.

1320120302220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11231911 (or 11231906 counting only the distinct ones).

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

Adding to 1320120302220 its reverse (222030210231), we get a palindrome (1542150512451).

The spelling of 1320120302220 in words is "one trillion, three hundred twenty billion, one hundred twenty million, three hundred two thousand, two hundred twenty".