2133133220 has 24 divisors (see below), whose sum is σ = 4480447608. Its totient is φ = 853088000.

The previous prime is 2133133187. The next prime is 2133133243. The reversal of 2133133220 is 223313312.

It can be written as a sum of positive squares in 4 ways, for example, as 592727716 + 1540405504 = 24346^2 + 39248^2 .

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 2133133192 and 2133133201.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 195920 + ... + 206520.

It is an arithmetic number, because the mean of its divisors is an integer number (186685317).

Almost surely, 2^2133133220 is an apocalyptic number.

2133133220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2133133220 is an abundant number, since it is smaller than the sum of its proper divisors (2347314388).

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

2133133220 is a wasteful number, since it uses less digits than its factorization.

2133133220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20671 (or 20669 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 20.

The square root of 2133133220 is about 46185.8551939877. The cubic root of 2133133220 is about 1287.2789266949.

Adding to 2133133220 its reverse (223313312), we get a palindrome (2356446532).

The spelling of 2133133220 in words is "two billion, one hundred thirty-three million, one hundred thirty-three thousand, two hundred twenty".