21112061120 has 112 divisors (see below), whose sum is σ = 52153718400. Its totient is φ = 8134164480.

The previous prime is 21112061119. The next prime is 21112061129. The reversal of 21112061120 is 2116021112.

It is not an unprimeable number, because it can be changed into a prime (21112061129) 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, 1026296 + ... + 1046664.

It is an arithmetic number, because the mean of its divisors is an integer number (465658200).

Almost surely, 2^21112061120 is an apocalyptic number.

21112061120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 21112061120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26076859200).

21112061120 is an abundant number, since it is smaller than the sum of its proper divisors (31041657280).

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

21112061120 is a wasteful number, since it uses less digits than its factorization.

21112061120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20506 (or 20496 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 17.

Adding to 21112061120 its reverse (2116021112), we get a palindrome (23228082232).

The spelling of 21112061120 in words is "twenty-one billion, one hundred twelve million, sixty-one thousand, one hundred twenty".