22020100120 has 16 divisors (see below), whose sum is σ = 49545225360. Its totient is φ = 8808040032.

The previous prime is 22020100097. The next prime is 22020100121. The reversal of 22020100120 is 2100102022.

It is a Harshad number since it is a multiple of its sum of digits (10).

It is a junction number, because it is equal to n+sod(n) for n = 22020100097 and 22020100106.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22020100121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 275251212 + ... + 275251291.

It is an arithmetic number, because the mean of its divisors is an integer number (3096576585).

Almost surely, 2^22020100120 is an apocalyptic number.

22020100120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22020100120 is an abundant number, since it is smaller than the sum of its proper divisors (27525125240).

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

22020100120 is a wasteful number, since it uses less digits than its factorization.

22020100120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 550502514 (or 550502510 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 10.

Adding to 22020100120 its reverse (2100102022), we get a palindrome (24120202142).

The spelling of 22020100120 in words is "twenty-two billion, twenty million, one hundred thousand, one hundred twenty".