22420420220 has 24 divisors (see below), whose sum is σ = 51363145008. Its totient is φ = 8152880000.

The previous prime is 22420420207. The next prime is 22420420229. The reversal of 22420420220 is 2202402422.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 22420420192 and 22420420201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22420420229) by changing a digit.

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, 50955281 + ... + 50955720.

It is an arithmetic number, because the mean of its divisors is an integer number (2140131042).

Almost surely, 2^22420420220 is an apocalyptic number.

22420420220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22420420220 is an abundant number, since it is smaller than the sum of its proper divisors (28942724788).

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

22420420220 is a wasteful number, since it uses less digits than its factorization.

22420420220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 101911021 (or 101911019 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 20.

Adding to 22420420220 its reverse (2202402422), we get a palindrome (24622822642).

The spelling of 22420420220 in words is "twenty-two billion, four hundred twenty million, four hundred twenty thousand, two hundred twenty".