22461505220 has 96 divisors (see below), whose sum is σ = 58839540480. Its totient is φ = 6997271040.

The previous prime is 22461505189. The next prime is 22461505223. The reversal of 22461505220 is 2250516422.

It is not an unprimeable number, because it can be changed into a prime (22461505223) 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, 4970402 + ... + 4974918.

It is an arithmetic number, because the mean of its divisors is an integer number (612911880).

Almost surely, 2^22461505220 is an apocalyptic number.

22461505220 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 22461505220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29419770240).

22461505220 is an abundant number, since it is smaller than the sum of its proper divisors (36378035260).

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

22461505220 is a wasteful number, since it uses less digits than its factorization.

22461505220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7773 (or 7771 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 29.

The spelling of 22461505220 in words is "twenty-two billion, four hundred sixty-one million, five hundred five thousand, two hundred twenty".