21202110330330 has 64 divisors (see below), whose sum is σ = 52827052780800. Its totient is φ = 5439507279360.

The previous prime is 21202110330329. The next prime is 21202110330377. The reversal of 21202110330330 is 3303301120212.

It is a super-2 number, since 2×21202110330330² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 21202110330297 and 21202110330306.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 43118950 + ... + 43607889.

It is an arithmetic number, because the mean of its divisors is an integer number (825422699700).

Almost surely, 2^{21202110330330} is an apocalyptic number.

21202110330330 is an abundant number, since it is smaller than the sum of its proper divisors (31624942450470).

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

21202110330330 is a wasteful number, since it uses less digits than its factorization.

21202110330330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 86727159.

The product of its (nonzero) digits is 648, while the sum is 21.

Adding to 21202110330330 its reverse (3303301120212), we get a palindrome (24505411450542).

The spelling of 21202110330330 in words is "twenty-one trillion, two hundred two billion, one hundred ten million, three hundred thirty thousand, three hundred thirty".