2113133412 has 144 divisors (see below), whose sum is σ = 5670423360. Its totient is φ = 610481664.

The previous prime is 2113133357. The next prime is 2113133443. The reversal of 2113133412 is 2143313112.

It is a nude number because it is divisible by every one of its digits.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 6665878 + ... + 6666194.

It is an arithmetic number, because the mean of its divisors is an integer number (39377940).

Almost surely, 2^2113133412 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2113133412, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2835211680).

2113133412 is an abundant number, since it is smaller than the sum of its proper divisors (3557289948).

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

2113133412 is a wasteful number, since it uses less digits than its factorization.

2113133412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 542 (or 527 counting only the distinct ones).

The product of its digits is 432, while the sum is 21.

The square root of 2113133412 is about 45968.8308748439. The cubic root of 2113133412 is about 1283.2432021856.

Adding to 2113133412 its reverse (2143313112), we get a palindrome (4256446524).

The spelling of 2113133412 in words is "two billion, one hundred thirteen million, one hundred thirty-three thousand, four hundred twelve".