22224022020 has 36 divisors (see below), whose sum is σ = 67412867340. Its totient is φ = 5926405824.

The previous prime is 22224021971. The next prime is 22224022069. The reversal of 22224022020 is 2022042222.

It is a happy number.

22224022020 is a `hidden beast` number, since 2 + 222 + 402 + 20 + 20 = 666.

It is an interprime number because it is at equal distance from previous prime (22224021971) and next prime (22224022069).

It can be written as a sum of positive squares in 2 ways, for example, as 2639698884 + 19584323136 = 51378^2 + 139944^2 .

It is a tau number, because it is divible by the number of its divisors (36).

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 = 22224021984 and 22224022002.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 61733215 + ... + 61733574.

Almost surely, 2^22224022020 is an apocalyptic number.

22224022020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22224022020 is an abundant number, since it is smaller than the sum of its proper divisors (45188845320).

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

22224022020 is a wasteful number, since it uses less digits than its factorization.

22224022020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 123466804 (or 123466799 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 18.

Adding to 22224022020 its reverse (2022042222), we get a palindrome (24246064242).

The spelling of 22224022020 in words is "twenty-two billion, two hundred twenty-four million, twenty-two thousand, twenty".