22100000020 has 48 divisors (see below), whose sum is σ = 53122704768. Its totient is φ = 7565328000.

The previous prime is 22100000003. The next prime is 22100000029. The reversal of 22100000020 is 2000000122.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (7).

It is a junction number, because it is equal to n+sod(n) for n = 22099999949 and 22100000012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22100000029) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 32731 + ... + 212770.

It is an arithmetic number, because the mean of its divisors is an integer number (1106723016).

Almost surely, 2^22100000020 is an apocalyptic number.

22100000020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22100000020 is an abundant number, since it is smaller than the sum of its proper divisors (31022704748).

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

22100000020 is a wasteful number, since it uses less digits than its factorization.

22100000020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 246160 (or 246158 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 7.

Adding to 22100000020 its reverse (2000000122), we get a palindrome (24100000142).

The spelling of 22100000020 in words is "twenty-two billion, one hundred million, twenty", and thus it is an aban number.