22481451220 has 12 divisors (see below), whose sum is σ = 47211047604. Its totient is φ = 8992580480.

The previous prime is 22481451217. The next prime is 22481451229. The reversal of 22481451220 is 2215418422.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 3321908496 + 19159542724 = 57636^2 + 138418^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22481451229) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 562036261 + ... + 562036300.

It is an arithmetic number, because the mean of its divisors is an integer number (3934253967).

Almost surely, 2^22481451220 is an apocalyptic number.

22481451220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22481451220 is an abundant number, since it is smaller than the sum of its proper divisors (24729596384).

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

22481451220 is a wasteful number, since it uses less digits than its factorization.

22481451220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1124072570 (or 1124072568 counting only the distinct ones).

The product of its (nonzero) digits is 10240, while the sum is 31.

Adding to 22481451220 its reverse (2215418422), we get a palindrome (24696869642).

The spelling of 22481451220 in words is "twenty-two billion, four hundred eighty-one million, four hundred fifty-one thousand, two hundred twenty".