1320100221330 has 64 divisors (see below), whose sum is σ = 3840291561600. Its totient is φ = 320024295360.

The previous prime is 1320100221301. The next prime is 1320100221371. The reversal of 1320100221330 is 331220010231.

1320100221330 is a `hidden beast` number, since 1 + 320 + 10 + 0 + 2 + 2 + 1 + 330 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 222236125 + ... + 222242064.

It is an arithmetic number, because the mean of its divisors is an integer number (60004555650).

Almost surely, 2^{1320100221330} is an apocalyptic number.

1320100221330 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1320100221330 is an abundant number, since it is smaller than the sum of its proper divisors (2520191340270).

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

1320100221330 is a wasteful number, since it uses less digits than its factorization.

1320100221330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 444478216 (or 444478210 counting only the distinct ones).

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

Adding to 1320100221330 its reverse (331220010231), we get a palindrome (1651320231561).

The spelling of 1320100221330 in words is "one trillion, three hundred twenty billion, one hundred million, two hundred twenty-one thousand, three hundred thirty".