222204020420 has 24 divisors (see below), whose sum is σ = 467803846104. Its totient is φ = 88657721856.

The previous prime is 222204020347. The next prime is 222204020431. The reversal of 222204020420 is 24020402222.

It can be written as a sum of positive squares in 4 ways, for example, as 19788611584 + 202415408836 = 140672^2 + 449906^2 .

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 222204020392 and 222204020401.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13984757 + ... + 14000636.

It is an arithmetic number, because the mean of its divisors is an integer number (19491826921).

Almost surely, 2^222204020420 is an apocalyptic number.

222204020420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

222204020420 is an abundant number, since it is smaller than the sum of its proper divisors (245599825684).

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

222204020420 is a wasteful number, since it uses less digits than its factorization.

222204020420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27985799 (or 27985797 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 20.

Adding to 222204020420 its reverse (24020402222), we get a palindrome (246224422642).

The spelling of 222204020420 in words is "two hundred twenty-two billion, two hundred four million, twenty thousand, four hundred twenty".