22002442420 has 24 divisors (see below), whose sum is σ = 52805862144. Its totient is φ = 7543694496.

The previous prime is 22002442379. The next prime is 22002442471. The reversal of 22002442420 is 2424420022.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 22002442391 and 22002442400.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 78580012 + ... + 78580291.

It is an arithmetic number, because the mean of its divisors is an integer number (2200244256).

Almost surely, 2^22002442420 is an apocalyptic number.

22002442420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22002442420 is an abundant number, since it is smaller than the sum of its proper divisors (30803419724).

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

22002442420 is a wasteful number, since it uses less digits than its factorization.

22002442420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 157160319 (or 157160317 counting only the distinct ones).

The product of its (nonzero) digits is 2048, while the sum is 22.

Adding to 22002442420 its reverse (2424420022), we get a palindrome (24426862442).

The spelling of 22002442420 in words is "twenty-two billion, two million, four hundred forty-two thousand, four hundred twenty".