20021422230 has 192 divisors, whose sum is σ = 55824837120. Its totient is φ = 4967424000.

The previous prime is 20021422177. The next prime is 20021422231. The reversal of 20021422230 is 3222412002.

20021422230 is a `hidden beast` number, since 200 + 21 + 422 + 23 + 0 = 666.

It is a super-2 number, since 2×20021422230² (a number of 21 digits) contains 22 as substring.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20021422231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 28560880 + ... + 28561580.

It is an arithmetic number, because the mean of its divisors is an integer number (290754360).

Almost surely, 2^20021422230 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20021422230, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27912418560).

20021422230 is an abundant number, since it is smaller than the sum of its proper divisors (35803414890).

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

20021422230 is a wasteful number, since it uses less digits than its factorization.

20021422230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1127 (or 1124 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

Adding to 20021422230 its reverse (3222412002), we get a palindrome (23243834232).

The spelling of 20021422230 in words is "twenty billion, twenty-one million, four hundred twenty-two thousand, two hundred thirty".