20422444220 has 24 divisors (see below), whose sum is σ = 42891674784. Its totient is φ = 8168112576.

The previous prime is 20422444219. The next prime is 20422444241. The reversal of 20422444220 is 2244422402.

It is a super-2 number, since 2×20422444220² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 20422444220.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 160217 + ... + 257903.

It is an arithmetic number, because the mean of its divisors is an integer number (1787153116).

Almost surely, 2^20422444220 is an apocalyptic number.

20422444220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20422444220 is an abundant number, since it is smaller than the sum of its proper divisors (22469230564).

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

20422444220 is a wasteful number, since it uses less digits than its factorization.

20422444220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 108149 (or 108147 counting only the distinct ones).

The product of its (nonzero) digits is 8192, while the sum is 26.

Adding to 20422444220 its reverse (2244422402), we get a palindrome (22666866622).

The spelling of 20422444220 in words is "twenty billion, four hundred twenty-two million, four hundred forty-four thousand, two hundred twenty".