2133321020 has 96 divisors (see below), whose sum is σ = 4718601216. Its totient is φ = 809369600.

The previous prime is 2133321013. The next prime is 2133321053. The reversal of 2133321020 is 201233312.

It is a self number, because there is not a number n which added to its sum of digits gives 2133321020.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 8300732 + ... + 8300988.

It is an arithmetic number, because the mean of its divisors is an integer number (49152096).

Almost surely, 2^2133321020 is an apocalyptic number.

2133321020 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 2133321020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2359300608).

2133321020 is an abundant number, since it is smaller than the sum of its proper divisors (2585280196).

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

2133321020 is a wasteful number, since it uses less digits than its factorization.

2133321020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 551 (or 549 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 17.

The square root of 2133321020 is about 46187.8882392343. Note that the first 3 decimals coincide. The cubic root of 2133321020 is about 1287.3167027209.

Adding to 2133321020 its reverse (201233312), we get a palindrome (2334554332).

It can be divided in two parts, 213 and 3321020, that added together give a palindrome (3321233).

The spelling of 2133321020 in words is "two billion, one hundred thirty-three million, three hundred twenty-one thousand, twenty".