11123020013321 has 8 divisors (see below), whose sum is σ = 11216554331400. Its totient is φ = 11029737471232.

The previous prime is 11123020013309. The next prime is 11123020013353. The reversal of 11123020013321 is 12331002032111.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 116152137721 + 11006867875600 = 340811^2 + 3317660^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11123020013321 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11123020013293 and 11123020013302.

It is not an unprimeable number, because it can be changed into a prime (11123020013381) 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, 62855270 + ... + 63031983.

It is an arithmetic number, because the mean of its divisors is an integer number (1402069291425).

Almost surely, 2^{11123020013321} is an apocalyptic number.

It is an amenable number.

11123020013321 is a deficient number, since it is larger than the sum of its proper divisors (93534318079).

11123020013321 is a wasteful number, since it uses less digits than its factorization.

11123020013321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 125887995.

The product of its (nonzero) digits is 216, while the sum is 20.

Adding to 11123020013321 its reverse (12331002032111), we get a palindrome (23454022045432).

The spelling of 11123020013321 in words is "eleven trillion, one hundred twenty-three billion, twenty million, thirteen thousand, three hundred twenty-one".