21033201330 has 24 divisors (see below), whose sum is σ = 54686323692. Its totient is φ = 5608853664.

The previous prime is 21033201323. The next prime is 21033201347. The reversal of 21033201330 is 3310233012.

21033201330 is a `hidden beast` number, since 2 + 1 + 0 + 332 + 0 + 1 + 330 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 17165978361 + 3867222969 = 131019^2 + 62187^2 .

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 116851029 + ... + 116851208.

Almost surely, 2^21033201330 is an apocalyptic number.

21033201330 is an abundant number, since it is smaller than the sum of its proper divisors (33653122362).

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

21033201330 is a wasteful number, since it uses less digits than its factorization.

21033201330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 233702250 (or 233702247 counting only the distinct ones).

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

Adding to 21033201330 its reverse (3310233012), we get a palindrome (24343434342).

The spelling of 21033201330 in words is "twenty-one billion, thirty-three million, two hundred one thousand, three hundred thirty".