20400330222 has 64 divisors (see below), whose sum is σ = 45725299200. Its totient is φ = 6741645120.

The previous prime is 20400330221. The next prime is 20400330253. The reversal of 20400330222 is 22203300402.

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

It is a junction number, because it is equal to n+sod(n) for n = 20400330195 and 20400330204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20400330221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3685597 + ... + 3691127.

It is an arithmetic number, because the mean of its divisors is an integer number (714457800).

Almost surely, 2^20400330222 is an apocalyptic number.

20400330222 is an abundant number, since it is smaller than the sum of its proper divisors (25324968978).

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

20400330222 is a wasteful number, since it uses less digits than its factorization.

20400330222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6118 (or 6112 counting only the distinct ones).

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

Adding to 20400330222 its reverse (22203300402), we get a palindrome (42603630624).

The spelling of 20400330222 in words is "twenty billion, four hundred million, three hundred thirty thousand, two hundred twenty-two".