11112021321 has 16 divisors (see below), whose sum is σ = 16228512000. Its totient is φ = 6731825408.

The previous prime is 11112021299. The next prime is 11112021329. The reversal of 11112021321 is 12312021111.

It is a cyclic number.

It is not a de Polignac number, because 11112021321 - 2¹⁸ = 11111759177 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 11112021321.

It is not an unprimeable number, because it can be changed into a prime (11112021329) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3755121 + ... + 3758078.

It is an arithmetic number, because the mean of its divisors is an integer number (1014282000).

Almost surely, 2^11112021321 is an apocalyptic number.

It is an amenable number.

11112021321 is a deficient number, since it is larger than the sum of its proper divisors (5116490679).

11112021321 is a wasteful number, since it uses less digits than its factorization.

11112021321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7513248.

The product of its (nonzero) digits is 24, while the sum is 15.

Adding to 11112021321 its reverse (12312021111), we get a palindrome (23424042432).

The spelling of 11112021321 in words is "eleven billion, one hundred twelve million, twenty-one thousand, three hundred twenty-one".