1100100331221 has 4 divisors (see below), whose sum is σ = 1466800441632. Its totient is φ = 733400220812.

The previous prime is 1100100331157. The next prime is 1100100331237. The reversal of 1100100331221 is 1221330010011.

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 1100100331221 - 2⁶ = 1100100331157 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1100100331221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1100100331241) 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, 183350055201 + ... + 183350055206.

It is an arithmetic number, because the mean of its divisors is an integer number (366700110408).

Almost surely, 2^{1100100331221} is an apocalyptic number.

It is an amenable number.

1100100331221 is a deficient number, since it is larger than the sum of its proper divisors (366700110411).

1100100331221 is an equidigital number, since it uses as much as digits as its factorization.

1100100331221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 366700110410.

The product of its (nonzero) digits is 36, while the sum is 15.

Adding to 1100100331221 its reverse (1221330010011), we get a palindrome (2321430341232).

The spelling of 1100100331221 in words is "one trillion, one hundred billion, one hundred million, three hundred thirty-one thousand, two hundred twenty-one".