11113111021321 has 8 divisors (see below), whose sum is σ = 11153348376264. Its totient is φ = 11072874514560.

The previous prime is 11113111021307. The next prime is 11113111021423. The reversal of 11113111021321 is 12312011131111.

It can be written as a sum of positive squares in 4 ways, for example, as 11313513225 + 11101797508096 = 106365^2 + 3331936^2 .

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-11113111021321 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11113111021721) 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, 39396501 + ... + 39677581.

It is an arithmetic number, because the mean of its divisors is an integer number (1394168547033).

Almost surely, 2^{11113111021321} is an apocalyptic number.

It is an amenable number.

11113111021321 is a deficient number, since it is larger than the sum of its proper divisors (40237354943).

11113111021321 is a wasteful number, since it uses less digits than its factorization.

11113111021321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 424091.

The product of its (nonzero) digits is 36, while the sum is 19.

Adding to 11113111021321 its reverse (12312011131111), we get a palindrome (23425122152432).

The spelling of 11113111021321 in words is "eleven trillion, one hundred thirteen billion, one hundred eleven million, twenty-one thousand, three hundred twenty-one".