11121021113223 has 32 divisors (see below), whose sum is σ = 17137232570880. Its totient is φ = 6283280424960.

The previous prime is 11121021113161. The next prime is 11121021113249. The reversal of 11121021113223 is 32231112012111.

It is not a de Polignac number, because 11121021113223 - 2¹⁷ = 11121020982151 is a prime.

It is a super-2 number, since 2×11121021113223² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a self number, because there is not a number n which added to its sum of digits gives 11121021113223.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11121021113273) 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 31 ways as a sum of consecutive naturals, for example, 85342588 + ... + 85472798.

It is an arithmetic number, because the mean of its divisors is an integer number (535538517840).

Almost surely, 2^{11121021113223} is an apocalyptic number.

11121021113223 is a deficient number, since it is larger than the sum of its proper divisors (6016211457657).

11121021113223 is a wasteful number, since it uses less digits than its factorization.

11121021113223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 176007.

The product of its (nonzero) digits is 144, while the sum is 21.

Adding to 11121021113223 its reverse (32231112012111), we get a palindrome (43352133125334).

The spelling of 11121021113223 in words is "eleven trillion, one hundred twenty-one billion, twenty-one million, one hundred thirteen thousand, two hundred twenty-three".