21010000001330 has 16 divisors (see below), whose sum is σ = 38437967216664. Its totient is φ = 8266229508480.

The previous prime is 21010000001327. The next prime is 21010000001351. The reversal of 21010000001330 is 3310000001012.

It can be written as a sum of positive squares in 4 ways, for example, as 16006488657721 + 5003511343609 = 4000811^2 + 2236853^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17221310867 + ... + 17221312086.

Almost surely, 2^{21010000001330} is an apocalyptic number.

21010000001330 is a deficient number, since it is larger than the sum of its proper divisors (17427967215334).

21010000001330 is a wasteful number, since it uses less digits than its factorization.

21010000001330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34442623021.

The product of its (nonzero) digits is 18, while the sum is 11.

Adding to 21010000001330 its reverse (3310000001012), we get a palindrome (24320000002342).

The spelling of 21010000001330 in words is "twenty-one trillion, ten billion, one thousand, three hundred thirty".