2113321100 has 144 divisors (see below), whose sum is σ = 5144670720. Its totient is φ = 747052800.

The previous prime is 2113321081. The next prime is 2113321123. The reversal of 2113321100 is 11233112.

It is a super-2 number, since 2×2113321100² = 8932252143410420000, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 7212554 + ... + 7212846.

It is an arithmetic number, because the mean of its divisors is an integer number (35726880).

Almost surely, 2^2113321100 is an apocalyptic number.

2113321100 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 2113321100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2572335360).

2113321100 is an abundant number, since it is smaller than the sum of its proper divisors (3031349620).

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

2113321100 is a wasteful number, since it uses less digits than its factorization.

2113321100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 480 (or 473 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 14.

The square root of 2113321100 is about 45970.8722997508. The cubic root of 2113321100 is about 1283.2811935114.

Adding to 2113321100 its reverse (11233112), we get a palindrome (2124554212).

The spelling of 2113321100 in words is "two billion, one hundred thirteen million, three hundred twenty-one thousand, one hundred".