911121121118 has 16 divisors (see below), whose sum is σ = 1472212125216. Its totient is φ = 420402845280.

The previous prime is 911121121111. The next prime is 911121121243. The reversal of 911121121118 is 811121121119.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (911121121111) 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, 4677521 + ... + 4868412.

It is an arithmetic number, because the mean of its divisors is an integer number (92013257826).

Almost surely, 2^911121121118 is an apocalyptic number.

911121121118 is a deficient number, since it is larger than the sum of its proper divisors (561091004098).

911121121118 is a wasteful number, since it uses less digits than its factorization.

911121121118 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9549619.

The product of its digits is 288, while the sum is 29.

Subtracting from 911121121118 its reverse (811121121119), we obtain a palindrome (99999999999).

The spelling of 911121121118 in words is "nine hundred eleven billion, one hundred twenty-one million, one hundred twenty-one thousand, one hundred eighteen".