21033200330 has 16 divisors (see below), whose sum is σ = 39165270120. Its totient is φ = 8123166912.

The previous prime is 21033200297. The next prime is 21033200351. The reversal of 21033200330 is 3300233012.

It can be written as a sum of positive squares in 4 ways, for example, as 15030514801 + 6002685529 = 122599^2 + 77477^2 .

It is a super-2 number, since 2×21033200330² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 21033200299 and 21033200308.

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, 36263849 + ... + 36264428.

Almost surely, 2^21033200330 is an apocalyptic number.

21033200330 is a deficient number, since it is larger than the sum of its proper divisors (18132069790).

21033200330 is a wasteful number, since it uses less digits than its factorization.

21033200330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72528313.

The product of its (nonzero) digits is 324, while the sum is 17.

Adding to 21033200330 its reverse (3300233012), we get a palindrome (24333433342).

The spelling of 21033200330 in words is "twenty-one billion, thirty-three million, two hundred thousand, three hundred thirty".