11031301021 has 8 divisors (see below), whose sum is σ = 11884161240. Its totient is φ = 10179054912.

The previous prime is 11031301013. The next prime is 11031301063. The reversal of 11031301021 is 12010313011.

It can be written as a sum of positive squares in 4 ways, for example, as 1631028996 + 9400272025 = 40386^2 + 96955^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 11031301021 - 2³ = 11031301013 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (13).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11031300992 and 11031301010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11031301091) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 115870 + ... + 188383.

It is an arithmetic number, because the mean of its divisors is an integer number (1485520155).

Almost surely, 2^11031301021 is an apocalyptic number.

It is an amenable number.

11031301021 is a deficient number, since it is larger than the sum of its proper divisors (852860219).

11031301021 is a wasteful number, since it uses less digits than its factorization.

11031301021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 307055.

The product of its (nonzero) digits is 18, while the sum is 13.

Adding to 11031301021 its reverse (12010313011), we get a palindrome (23041614032).

The spelling of 11031301021 in words is "eleven billion, thirty-one million, three hundred one thousand, twenty-one".