2121110080 has 56 divisors (see below), whose sum is σ = 5089550400. Its totient is φ = 841950720.

The previous prime is 2121110059. The next prime is 2121110129. The reversal of 2121110080 is 800111212.

It is a Harshad number since it is a multiple of its sum of digits (16).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16621 + ... + 67219.

Almost surely, 2^2121110080 is an apocalyptic number.

2121110080 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 2121110080, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2544775200).

2121110080 is an abundant number, since it is smaller than the sum of its proper divisors (2968440320).

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

2121110080 is a wasteful number, since it uses less digits than its factorization.

2121110080 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50747 (or 50737 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 16.

The square root of 2121110080 is about 46055.5108537513. The cubic root of 2121110080 is about 1284.8558393288.

Adding to 2121110080 its reverse (800111212), we get a palindrome (2921221292).

The spelling of 2121110080 in words is "two billion, one hundred twenty-one million, one hundred ten thousand, eighty".