1100312133221 has 4 divisors (see below), whose sum is σ = 1257499580832. Its totient is φ = 943124685612.

The previous prime is 1100312133143. The next prime is 1100312133229. The reversal of 1100312133221 is 1223312130011.

It is a happy number.

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 not a de Polignac number, because 1100312133221 - 2¹⁸ = 1100311871077 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1100312133193 and 1100312133202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1100312133229) 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, 78593723795 + ... + 78593723808.

It is an arithmetic number, because the mean of its divisors is an integer number (314374895208).

Almost surely, 2^{1100312133221} is an apocalyptic number.

It is an amenable number.

1100312133221 is a deficient number, since it is larger than the sum of its proper divisors (157187447611).

1100312133221 is an equidigital number, since it uses as much as digits as its factorization.

1100312133221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 157187447610.

The product of its (nonzero) digits is 216, while the sum is 20.

Adding to 1100312133221 its reverse (1223312130011), we get a palindrome (2323624263232).

The spelling of 1100312133221 in words is "one trillion, one hundred billion, three hundred twelve million, one hundred thirty-three thousand, two hundred twenty-one".