1101323221320 has 128 divisors (see below), whose sum is σ = 3789403741440. Its totient is φ = 250835128320.

The previous prime is 1101323221309. The next prime is 1101323221331. The reversal of 1101323221320 is 231223231011.

It is an interprime number because it is at equal distance from previous prime (1101323221309) and next prime (1101323221331).

It is a Harshad number since it is a multiple of its sum of digits (21).

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, 2096877 + ... + 2568956.

It is an arithmetic number, because the mean of its divisors is an integer number (29604716730).

Almost surely, 2^{1101323221320} is an apocalyptic number.

1101323221320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1101323221320 is an abundant number, since it is smaller than the sum of its proper divisors (2688080520120).

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

1101323221320 is a wasteful number, since it uses less digits than its factorization.

1101323221320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4666135 (or 4666131 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 21.

Adding to 1101323221320 its reverse (231223231011), we get a palindrome (1332546452331).

The spelling of 1101323221320 in words is "one trillion, one hundred one billion, three hundred twenty-three million, two hundred twenty-one thousand, three hundred twenty".