22046640220 has 96 divisors (see below), whose sum is σ = 51051119616. Its totient is φ = 7931040000.

The previous prime is 22046640211. The next prime is 22046640223. The reversal of 22046640220 is 2204664022.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22046640223) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 8668269 + ... + 8670811.

It is an arithmetic number, because the mean of its divisors is an integer number (531782496).

Almost surely, 2^22046640220 is an apocalyptic number.

22046640220 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 22046640220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25525559808).

22046640220 is an abundant number, since it is smaller than the sum of its proper divisors (29004479396).

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

22046640220 is a wasteful number, since it uses less digits than its factorization.

22046640220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2971 (or 2969 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 28.

It can be divided in two parts, 22046 and 640220, that added together give a palindrome (662266).

The spelling of 22046640220 in words is "twenty-two billion, forty-six million, six hundred forty thousand, two hundred twenty".