22100220012 has 48 divisors (see below), whose sum is σ = 55635625472. Its totient is φ = 6787609920.

The previous prime is 22100220011. The next prime is 22100220047. The reversal of 22100220012 is 21002200122.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a self number, because there is not a number n which added to its sum of digits gives 22100220012.

It is not an unprimeable number, because it can be changed into a prime (22100220011) 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, 44164 + ... + 214827.

Almost surely, 2^22100220012 is an apocalyptic number.

It is an amenable number.

22100220012 is an abundant number, since it is smaller than the sum of its proper divisors (33535405460).

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

22100220012 is a wasteful number, since it uses less digits than its factorization.

22100220012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 259558 (or 259556 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 12.

Adding to 22100220012 its reverse (21002200122), we get a palindrome (43102420134).

It can be divided in two parts, 2 and 2100220012, that multiplied together give a palindrome (4200440024).

The spelling of 22100220012 in words is "twenty-two billion, one hundred million, two hundred twenty thousand, twelve".