11121201112168 has 32 divisors (see below), whose sum is σ = 23936128286400. Its totient is φ = 4745232438912.

The previous prime is 11121201112081. The next prime is 11121201112169. The reversal of 11121201112168 is 86121110212111.

It is a super-2 number, since 2×11121201112168² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is not an unprimeable number, because it can be changed into a prime (11121201112169) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 437416533 + ... + 437441956.

It is an arithmetic number, because the mean of its divisors is an integer number (748004008950).

Almost surely, 2^{11121201112168} is an apocalyptic number.

It is an amenable number.

11121201112168 is an abundant number, since it is smaller than the sum of its proper divisors (12814927174232).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

11121201112168 is a wasteful number, since it uses less digits than its factorization.

11121201112168 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 874858729 (or 874858725 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 28.

Adding to 11121201112168 its reverse (86121110212111), we get a palindrome (97242311324279).

The spelling of 11121201112168 in words is "eleven trillion, one hundred twenty-one billion, two hundred one million, one hundred twelve thousand, one hundred sixty-eight".