1100201321321 has 4 divisors (see below), whose sum is σ = 1115272572372. Its totient is φ = 1085130070272.

The previous prime is 1100201321309. The next prime is 1100201321369. The reversal of 1100201321321 is 1231231020011.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 610642222096 + 489559099225 = 781436^2 + 699685^2 .

It is a cyclic number.

It is not a de Polignac number, because 1100201321321 - 2⁶ = 1100201321257 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1100201321321.

It is not an unprimeable number, because it can be changed into a prime (1100201323321) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7535625416 + ... + 7535625561.

It is an arithmetic number, because the mean of its divisors is an integer number (278818143093).

Almost surely, 2^{1100201321321} is an apocalyptic number.

It is an amenable number.

1100201321321 is a deficient number, since it is larger than the sum of its proper divisors (15071251051).

1100201321321 is an equidigital number, since it uses as much as digits as its factorization.

1100201321321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15071251050.

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 1100201321321 its reverse (1231231020011), we get a palindrome (2331432341332).

It can be divided in two parts, 110020 and 1321321, that added together give a palindrome (1431341).

The spelling of 1100201321321 in words is "one trillion, one hundred billion, two hundred one million, three hundred twenty-one thousand, three hundred twenty-one".