21010130330 has 24 divisors (see below), whose sum is σ = 43992641268. Its totient is φ = 7203473088.

The previous prime is 21010130299. The next prime is 21010130377. The reversal of 21010130330 is 3303101012.

It can be written as a sum of positive squares in 2 ways, for example, as 19091777929 + 1918352401 = 138173^2 + 43799^2 .

It is a Harshad number since it is a multiple of its sum of digits (14).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 21438419 + ... + 21439398.

Almost surely, 2^21010130330 is an apocalyptic number.

21010130330 is an abundant number, since it is smaller than the sum of its proper divisors (22982510938).

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

21010130330 is a wasteful number, since it uses less digits than its factorization.

21010130330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42877838 (or 42877831 counting only the distinct ones).

The product of its (nonzero) digits is 54, while the sum is 14.

Adding to 21010130330 its reverse (3303101012), we get a palindrome (24313231342).

The spelling of 21010130330 in words is "twenty-one billion, ten million, one hundred thirty thousand, three hundred thirty".