21101100112118 has 32 divisors (see below), whose sum is σ = 35306042510592. Its totient is φ = 9392642294400.

The previous prime is 21101100112111. The next prime is 21101100112121. The reversal of 21101100112118 is 81121100110112.

It is a self number, because there is not a number n which added to its sum of digits gives 21101100112118.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21101100112111) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 44439653 + ... + 44911968.

It is an arithmetic number, because the mean of its divisors is an integer number (1103313828456).

Almost surely, 2^{21101100112118} is an apocalyptic number.

21101100112118 is a deficient number, since it is larger than the sum of its proper divisors (14204942398474).

21101100112118 is a wasteful number, since it uses less digits than its factorization.

21101100112118 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 89351960.

The product of its (nonzero) digits is 32, while the sum is 20.

The spelling of 21101100112118 in words is "twenty-one trillion, one hundred one billion, one hundred million, one hundred twelve thousand, one hundred eighteen".