21210130330 has 32 divisors (see below), whose sum is σ = 38866936320. Its totient is φ = 8331939840.

The previous prime is 21210130321. The next prime is 21210130351. The reversal of 21210130330 is 3303101212.

It is a super-3 number, since 3×21210130330³ (a number of 32 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 124351 + ... + 240589.

It is an arithmetic number, because the mean of its divisors is an integer number (1214591760).

Almost surely, 2^21210130330 is an apocalyptic number.

21210130330 is a deficient number, since it is larger than the sum of its proper divisors (17656805990).

21210130330 is a wasteful number, since it uses less digits than its factorization.

21210130330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 116574.

The product of its (nonzero) digits is 108, while the sum is 16.

Adding to 21210130330 its reverse (3303101212), we get a palindrome (24513231542).

The spelling of 21210130330 in words is "twenty-one billion, two hundred ten million, one hundred thirty thousand, three hundred thirty".