22242040212 has 144 divisors (see below), whose sum is σ = 61517449728. Its totient is φ = 6235104960.

The previous prime is 22242040201. The next prime is 22242040213. The reversal of 22242040212 is 21204024222.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22242040213) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 9475623 + ... + 9477969.

It is an arithmetic number, because the mean of its divisors is an integer number (427204512).

Almost surely, 2^22242040212 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 22242040212, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30758724864).

22242040212 is an abundant number, since it is smaller than the sum of its proper divisors (39275409516).

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

22242040212 is a wasteful number, since it uses less digits than its factorization.

22242040212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2666 (or 2657 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 21.

Adding to 22242040212 its reverse (21204024222), we get a palindrome (43446064434).

The spelling of 22242040212 in words is "twenty-two billion, two hundred forty-two million, forty thousand, two hundred twelve".