1100021201321 has 4 divisors (see below), whose sum is σ = 1257167087232. Its totient is φ = 942875315412.

The previous prime is 1100021201263. The next prime is 1100021201333. The reversal of 1100021201321 is 1231021200011.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1100021201321 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1100021201296 and 1100021201305.

It is not an unprimeable number, because it can be changed into a prime (1100021201021) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 78572942945 + ... + 78572942958.

It is an arithmetic number, because the mean of its divisors is an integer number (314291771808).

Almost surely, 2^{1100021201321} is an apocalyptic number.

It is an amenable number.

1100021201321 is a deficient number, since it is larger than the sum of its proper divisors (157145885911).

1100021201321 is an equidigital number, since it uses as much as digits as its factorization.

1100021201321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 157145885910.

The product of its (nonzero) digits is 24, while the sum is 14.

Adding to 1100021201321 its reverse (1231021200011), we get a palindrome (2331042401332).

The spelling of 1100021201321 in words is "one trillion, one hundred billion, twenty-one million, two hundred one thousand, three hundred twenty-one".