21000011021330 has 64 divisors (see below), whose sum is σ = 41509839716352. Its totient is φ = 7585786434240.

The previous prime is 21000011021309. The next prime is 21000011021369. The reversal of 21000011021330 is 3312011000012.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 28421027 + ... + 29150553.

It is an arithmetic number, because the mean of its divisors is an integer number (648591245568).

Almost surely, 2^{21000011021330} is an apocalyptic number.

21000011021330 is a deficient number, since it is larger than the sum of its proper divisors (20509828695022).

21000011021330 is a wasteful number, since it uses less digits than its factorization.

21000011021330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 731279.

The product of its (nonzero) digits is 36, while the sum is 14.

Adding to 21000011021330 its reverse (3312011000012), we get a palindrome (24312022021342).

The spelling of 21000011021330 in words is "twenty-one trillion, eleven million, twenty-one thousand, three hundred thirty".