222210020 has 12 divisors (see below), whose sum is σ = 466641084. Its totient is φ = 88884000.

The previous prime is 222210019. The next prime is 222210041. The reversal of 222210020 is 20012222.

It can be written as a sum of positive squares in 2 ways, for example, as 57395776 + 164814244 = 7576^2 + 12838^2 .

It is a junction number, because it is equal to n+sod(n) for n = 222209983 and 222210010.

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 3 ways as a sum of consecutive naturals, for example, 5555231 + ... + 5555270.

It is an arithmetic number, because the mean of its divisors is an integer number (38886757).

Almost surely, 2^222210020 is an apocalyptic number.

222210020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

222210020 is an abundant number, since it is smaller than the sum of its proper divisors (244431064).

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

222210020 is a wasteful number, since it uses less digits than its factorization.

222210020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11110510 (or 11110508 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 11.

The square root of 222210020 is about 14906.7105694046. The cubic root of 222210020 is about 605.6957776198.

Adding to 222210020 its reverse (20012222), we get a palindrome (242222242).

The spelling of 222210020 in words is "two hundred twenty-two million, two hundred ten thousand, twenty".