22240012312 has 64 divisors (see below), whose sum is σ = 49240074240. Its totient is φ = 9215424000.

The previous prime is 22240012309. The next prime is 22240012313. The reversal of 22240012312 is 21321004222.

It is a self number, because there is not a number n which added to its sum of digits gives 22240012312.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22240012313) 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, 2079603 + ... + 2090269.

It is an arithmetic number, because the mean of its divisors is an integer number (769376160).

Almost surely, 2^22240012312 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 22240012312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24620037120).

22240012312 is an abundant number, since it is smaller than the sum of its proper divisors (27000061928).

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

22240012312 is a wasteful number, since it uses less digits than its factorization.

22240012312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11912 (or 11908 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 19.

Adding to 22240012312 its reverse (21321004222), we get a palindrome (43561016534).

The spelling of 22240012312 in words is "twenty-two billion, two hundred forty million, twelve thousand, three hundred twelve".