22303121220 has 72 divisors (see below), whose sum is σ = 69481275864. Its totient is φ = 5786754048.

The previous prime is 22303121201. The next prime is 22303121227. The reversal of 22303121220 is 2212130322.

22303121220 is a `hidden beast` number, since 2 + 230 + 312 + 122 + 0 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 10340449344 + 11962671876 = 101688^2 + 109374^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 22303121193 and 22303121202.

It is not an unprimeable number, because it can be changed into a prime (22303121227) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1667749 + ... + 1681068.

Almost surely, 2^22303121220 is an apocalyptic number.

22303121220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22303121220 is an abundant number, since it is smaller than the sum of its proper divisors (47178154644).

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

22303121220 is a wasteful number, since it uses less digits than its factorization.

22303121220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3348869 (or 3348864 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

Adding to 22303121220 its reverse (2212130322), we get a palindrome (24515251542).

The spelling of 22303121220 in words is "twenty-two billion, three hundred three million, one hundred twenty-one thousand, two hundred twenty".