20133021330 has 96 divisors (see below), whose sum is σ = 53259970608. Its totient is φ = 5275238400.

The previous prime is 20133021323. The next prime is 20133021343. The reversal of 20133021330 is 3312033102.

20133021330 is a `hidden beast` number, since 2 + 0 + 1 + 330 + 2 + 1 + 330 = 666.

It can be written as a sum of positive squares in 8 ways, for example, as 9796842441 + 10336178889 = 98979^2 + 101667^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

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, 9315450 + ... + 9317610.

Almost surely, 2^20133021330 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20133021330, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26629985304).

20133021330 is an abundant number, since it is smaller than the sum of its proper divisors (33126949278).

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

20133021330 is a wasteful number, since it uses less digits than its factorization.

20133021330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3932 (or 3929 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 18.

Adding to 20133021330 its reverse (3312033102), we get a palindrome (23445054432).

The spelling of 20133021330 in words is "twenty billion, one hundred thirty-three million, twenty-one thousand, three hundred thirty".