20000222220 has 96 divisors (see below), whose sum is σ = 64685246976. Its totient is φ = 4563328000.

The previous prime is 20000222219. The next prime is 20000222227. The reversal of 20000222220 is 2222200002.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a junction number, because it is equal to n+sod(n) for n = 20000222196 and 20000222205.

It is not an unprimeable number, because it can be changed into a prime (20000222227) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 880056 + ... + 902495.

It is an arithmetic number, because the mean of its divisors is an integer number (673804656).

Almost surely, 2^20000222220 is an apocalyptic number.

20000222220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20000222220 is an abundant number, since it is smaller than the sum of its proper divisors (44685024756).

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

20000222220 is a wasteful number, since it uses less digits than its factorization.

20000222220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1782591 (or 1782589 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 12.

Adding to 20000222220 its reverse (2222200002), we get a palindrome (22222422222).

It can be divided in two parts, 200002 and 22220, that added together give a palindrome (222222).

The spelling of 20000222220 in words is "twenty billion, two hundred twenty-two thousand, two hundred twenty".