1321044101 has 12 divisors (see below), whose sum is σ = 1433654208. Its totient is φ = 1216719504.

The previous prime is 1321044091. The next prime is 1321044107. The reversal of 1321044101 is 1014401231.

It is a happy number.

It is not a de Polignac number, because 1321044101 - 2⁶ = 1321044037 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1321044101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1321044107) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 69806 + ... + 86688.

It is an arithmetic number, because the mean of its divisors is an integer number (119471184).

Almost surely, 2^1321044101 is an apocalyptic number.

It is an amenable number.

1321044101 is a deficient number, since it is larger than the sum of its proper divisors (112610107).

1321044101 is a wasteful number, since it uses less digits than its factorization.

1321044101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17372 (or 17359 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 17.

The square root of 1321044101 is about 36346.1703759832. The cubic root of 1321044101 is about 1097.2504611309.

Adding to 1321044101 its reverse (1014401231), we get a palindrome (2335445332).

The spelling of 1321044101 in words is "one billion, three hundred twenty-one million, forty-four thousand, one hundred one".