20022223220 has 12 divisors (see below), whose sum is σ = 42046668804. Its totient is φ = 8008889280.

The previous prime is 20022223163. The next prime is 20022223231. The reversal of 20022223220 is 2232222002.

It can be written as a sum of positive squares in 2 ways, for example, as 11489267344 + 8532955876 = 107188^2 + 92374^2 .

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 500555561 + ... + 500555600.

It is an arithmetic number, because the mean of its divisors is an integer number (3503889067).

Almost surely, 2^20022223220 is an apocalyptic number.

20022223220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20022223220 is an abundant number, since it is smaller than the sum of its proper divisors (22024445584).

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

20022223220 is a wasteful number, since it uses less digits than its factorization.

20022223220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1001111170 (or 1001111168 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 17.

Adding to 20022223220 its reverse (2232222002), we get a palindrome (22254445222).

It can be divided in two parts, 2002 and 2223220, that added together give a palindrome (2225222).

The spelling of 20022223220 in words is "twenty billion, twenty-two million, two hundred twenty-three thousand, two hundred twenty".