21022331330 has 192 divisors, whose sum is σ = 52310240640. Its totient is φ = 5978649600.

The previous prime is 21022331311. The next prime is 21022331347. The reversal of 21022331330 is 3313322012.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 6234545 + ... + 6237915.

It is an arithmetic number, because the mean of its divisors is an integer number (272449170).

Almost surely, 2^21022331330 is an apocalyptic number.

21022331330 is an abundant number, since it is smaller than the sum of its proper divisors (31287909310).

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

21022331330 is a wasteful number, since it uses less digits than its factorization.

21022331330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3505 (or 3498 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 20.

Adding to 21022331330 its reverse (3313322012), we get a palindrome (24335653342).

The spelling of 21022331330 in words is "twenty-one billion, twenty-two million, three hundred thirty-one thousand, three hundred thirty".