1101313221 has 4 divisors (see below), whose sum is σ = 1468417632. Its totient is φ = 734208812.

The previous prime is 1101313189. The next prime is 1101313231. The reversal of 1101313221 is 1223131011.

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 1101313221 - 2⁵ = 1101313189 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1101313221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1101313231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 183552201 + ... + 183552206.

It is an arithmetic number, because the mean of its divisors is an integer number (367104408).

Almost surely, 2^1101313221 is an apocalyptic number.

It is an amenable number.

1101313221 is a deficient number, since it is larger than the sum of its proper divisors (367104411).

1101313221 is an equidigital number, since it uses as much as digits as its factorization.

1101313221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 367104410.

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

The square root of 1101313221 is about 33186.0395497866. The cubic root of 1101313221 is about 1032.6907435845.

Adding to 1101313221 its reverse (1223131011), we get a palindrome (2324444232).

The spelling of 1101313221 in words is "one billion, one hundred one million, three hundred thirteen thousand, two hundred twenty-one".