21101330330 has 8 divisors (see below), whose sum is σ = 37982394612. Its totient is φ = 8440532128.

The previous prime is 21101330329. The next prime is 21101330347. The reversal of 21101330330 is 3303310112.

It can be written as a sum of positive squares in 2 ways, for example, as 19659685369 + 1441644961 = 140213^2 + 37969^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×21101330330² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 21101330299 and 21101330308.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1055066507 + ... + 1055066526.

Almost surely, 2^21101330330 is an apocalyptic number.

21101330330 is a deficient number, since it is larger than the sum of its proper divisors (16881064282).

21101330330 is a wasteful number, since it uses less digits than its factorization.

21101330330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2110133040.

The product of its (nonzero) digits is 162, while the sum is 17.

Adding to 21101330330 its reverse (3303310112), we get a palindrome (24404640442).

The spelling of 21101330330 in words is "twenty-one billion, one hundred one million, three hundred thirty thousand, three hundred thirty".