1101404221 has 4 divisors (see below), whose sum is σ = 1102214844. Its totient is φ = 1100593600.

The previous prime is 1101404209. The next prime is 1101404233. The reversal of 1101404221 is 1224041011.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1224041011 = 2341 ⋅522871.

It is an interprime number because it is at equal distance from previous prime (1101404209) and next prime (1101404233).

It can be written as a sum of positive squares in 2 ways, for example, as 623500900 + 477903321 = 24970^2 + 21861^2 .

It is a cyclic number.

It is not a de Polignac number, because 1101404221 - 2⁵ = 1101404189 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1101404195 and 1101404204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1101404621) 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, 403270 + ... + 405991.

It is an arithmetic number, because the mean of its divisors is an integer number (275553711).

Almost surely, 2^1101404221 is an apocalyptic number.

It is an amenable number.

1101404221 is a deficient number, since it is larger than the sum of its proper divisors (810623).

1101404221 is an equidigital number, since it uses as much as digits as its factorization.

1101404221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 810622.

The product of its (nonzero) digits is 64, while the sum is 16.

The square root of 1101404221 is about 33187.4105799172. The cubic root of 1101404221 is about 1032.7191860741.

Adding to 1101404221 its reverse (1224041011), we get a palindrome (2325445232).

The spelling of 1101404221 in words is "one billion, one hundred one million, four hundred four thousand, two hundred twenty-one".