22020222312 has 192 divisors, whose sum is σ = 67761308160. Its totient is φ = 6399590400.

The previous prime is 22020222283. The next prime is 22020222317. The reversal of 22020222312 is 21322202022.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (22020222317) 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, 2770408 + ... + 2778344.

It is an arithmetic number, because the mean of its divisors is an integer number (352923480).

Almost surely, 2^22020222312 is an apocalyptic number.

22020222312 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22020222312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33880654080).

22020222312 is an abundant number, since it is smaller than the sum of its proper divisors (45741085848).

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

22020222312 is a wasteful number, since it uses less digits than its factorization.

22020222312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8104 (or 8097 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

Adding to 22020222312 its reverse (21322202022), we get a palindrome (43342424334).

The spelling of 22020222312 in words is "twenty-two billion, twenty million, two hundred twenty-two thousand, three hundred twelve".