22262012220 has 144 divisors (see below), whose sum is σ = 73699845408. Its totient is φ = 5005002240.

The previous prime is 22262012203. The next prime is 22262012221. The reversal of 22262012220 is 2221026222.

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 (22262012221) 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, 117274 + ... + 241406.

It is an arithmetic number, because the mean of its divisors is an integer number (511804482).

Almost surely, 2^22262012220 is an apocalyptic number.

22262012220 is a gapful number since it is divisible by the number (20) 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 22262012220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (36849922704).

22262012220 is an abundant number, since it is smaller than the sum of its proper divisors (51437833188).

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

22262012220 is a wasteful number, since it uses less digits than its factorization.

22262012220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 124220 (or 124211 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 21.

Adding to 22262012220 its reverse (2221026222), we get a palindrome (24483038442).

The spelling of 22262012220 in words is "twenty-two billion, two hundred sixty-two million, twelve thousand, two hundred twenty".