20222220020 has 24 divisors (see below), whose sum is σ = 42478111368. Its totient is φ = 8086707200.

The previous prime is 20222219971. The next prime is 20222220059. The reversal of 20222220020 is 2002222202.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 1948816 + 20220271204 = 1396^2 + 142198^2 .

It is a junction number, because it is equal to n+sod(n) for n = 20222219977 and 20222220004.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 59201 + ... + 209640.

It is an arithmetic number, because the mean of its divisors is an integer number (1769921307).

Almost surely, 2^20222220020 is an apocalyptic number.

20222220020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20222220020 is an abundant number, since it is smaller than the sum of its proper divisors (22255891348).

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

20222220020 is a wasteful number, since it uses less digits than its factorization.

20222220020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 272611 (or 272609 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 14.

Adding to 20222220020 its reverse (2002222202), we get a palindrome (22224442222).

The spelling of 20222220020 in words is "twenty billion, two hundred twenty-two million, two hundred twenty thousand, twenty".