22100020212 has 96 divisors (see below), whose sum is σ = 55039832064. Its totient is φ = 6885648000.

The previous prime is 22100020177. The next prime is 22100020231. The reversal of 22100020212 is 21202000122.

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

It is a congruent number.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 13632762 + ... + 13634382.

It is an arithmetic number, because the mean of its divisors is an integer number (573331584).

Almost surely, 2^22100020212 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22100020212, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27519916032).

22100020212 is an abundant number, since it is smaller than the sum of its proper divisors (32939811852).

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

22100020212 is a wasteful number, since it uses less digits than its factorization.

22100020212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2749 (or 2747 counting only the distinct ones).

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

Adding to 22100020212 its reverse (21202000122), we get a palindrome (43302020334).

The spelling of 22100020212 in words is "twenty-two billion, one hundred million, twenty thousand, two hundred twelve".