22105803820 has 24 divisors (see below), whose sum is σ = 46505554704. Its totient is φ = 8826442176.

The previous prime is 22105803799. The next prime is 22105803829. The reversal of 22105803820 is 2830850122.

It is not an unprimeable number, because it can be changed into a prime (22105803829) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 981042 + ... + 1003321.

It is an arithmetic number, because the mean of its divisors is an integer number (1937731446).

Almost surely, 2^22105803820 is an apocalyptic number.

22105803820 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22105803820 is an abundant number, since it is smaller than the sum of its proper divisors (24399750884).

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

22105803820 is a wasteful number, since it uses less digits than its factorization.

22105803820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1984929 (or 1984927 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 31.

The spelling of 22105803820 in words is "twenty-two billion, one hundred five million, eight hundred three thousand, eight hundred twenty".