2013521200 has 120 divisors (see below), whose sum is σ = 5313945600. Its totient is φ = 729780480.

The previous prime is 2013521179. The next prime is 2013521227. The reversal of 2013521200 is 21253102.

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 169041 + ... + 180559.

It is an arithmetic number, because the mean of its divisors is an integer number (44282880).

Almost surely, 2^2013521200 is an apocalyptic number.

2013521200 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 2013521200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2656972800).

2013521200 is an abundant number, since it is smaller than the sum of its proper divisors (3300424400).

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

2013521200 is a wasteful number, since it uses less digits than its factorization.

2013521200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11579 (or 11568 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 16.

The square root of 2013521200 is about 44872.2765190268. The cubic root of 2013521200 is about 1262.7539495033.

Adding to 2013521200 its reverse (21253102), we get a palindrome (2034774302).

The spelling of 2013521200 in words is "two billion, thirteen million, five hundred twenty-one thousand, two hundred".