2013121110 has 256 divisors, whose sum is σ = 6642155520. Its totient is φ = 376911360.

The previous prime is 2013121087. The next prime is 2013121111. The reversal of 2013121110 is 111213102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2013121111) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 1290511 + ... + 1292069.

It is an arithmetic number, because the mean of its divisors is an integer number (25945920).

Almost surely, 2^2013121110 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2013121110, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3321077760).

2013121110 is an abundant number, since it is smaller than the sum of its proper divisors (4629034410).

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

2013121110 is a wasteful number, since it uses less digits than its factorization.

2013121110 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1643.

The product of its (nonzero) digits is 12, while the sum is 12.

The square root of 2013121110 is about 44867.8181996852. The cubic root of 2013121110 is about 1262.6703068621.

Adding to 2013121110 its reverse (111213102), we get a palindrome (2124334212).

The spelling of 2013121110 in words is "two billion, thirteen million, one hundred twenty-one thousand, one hundred ten".