20320222230 has 384 divisors, whose sum is σ = 70308725760. Its totient is φ = 3941867520.

The previous prime is 20320222199. The next prime is 20320222249. The reversal of 20320222230 is 3222202302.

It is a super-2 number, since 2×20320222230² (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 an unprimeable number.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 16139341 + ... + 16140599.

It is an arithmetic number, because the mean of its divisors is an integer number (183095640).

Almost surely, 2^20320222230 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20320222230, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35154362880).

20320222230 is an abundant number, since it is smaller than the sum of its proper divisors (49988503530).

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

20320222230 is a wasteful number, since it uses less digits than its factorization.

20320222230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1444 (or 1441 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 18.

Adding to 20320222230 its reverse (3222202302), we get a palindrome (23542424532).

The spelling of 20320222230 in words is "twenty billion, three hundred twenty million, two hundred twenty-two thousand, two hundred thirty".