22121310330 has 128 divisors (see below), whose sum is σ = 67870656000. Its totient is φ = 5022300672.

The previous prime is 22121310307. The next prime is 22121310331. The reversal of 22121310330 is 3301312122.

22121310330 is a `hidden beast` number, since 2 + 2 + 1 + 21 + 310 + 330 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (22121310331) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 242334 + ... + 320886.

It is an arithmetic number, because the mean of its divisors is an integer number (530239500).

Almost surely, 2^22121310330 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22121310330, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33935328000).

22121310330 is an abundant number, since it is smaller than the sum of its proper divisors (45749345670).

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

22121310330 is a wasteful number, since it uses less digits than its factorization.

22121310330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78725 (or 78719 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

Adding to 22121310330 its reverse (3301312122), we get a palindrome (25422622452).

The spelling of 22121310330 in words is "twenty-two billion, one hundred twenty-one million, three hundred ten thousand, three hundred thirty".