21022513017330 has 32 divisors (see below), whose sum is σ = 55040761355328. Its totient is φ = 5096366792000.

The previous prime is 21022513017301. The next prime is 21022513017343. The reversal of 21022513017330 is 3371031522012.

It is a Harshad number since it is a multiple of its sum of digits (30).

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, 31852292121 + ... + 31852292780.

It is an arithmetic number, because the mean of its divisors is an integer number (1720023792354).

Almost surely, 2^{21022513017330} is an apocalyptic number.

21022513017330 is an abundant number, since it is smaller than the sum of its proper divisors (34018248337998).

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

21022513017330 is a wasteful number, since it uses less digits than its factorization.

21022513017330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63704584922.

The product of its (nonzero) digits is 7560, while the sum is 30.

Adding to 21022513017330 its reverse (3371031522012), we get a palindrome (24393544539342).

The spelling of 21022513017330 in words is "twenty-one trillion, twenty-two billion, five hundred thirteen million, seventeen thousand, three hundred thirty".