222224200021 has 8 divisors (see below), whose sum is σ = 230612308920. Its totient is φ = 213884438208.

The previous prime is 222224200019. The next prime is 222224200031. The reversal of 222224200021 is 120002422222.

It can be written as a sum of positive squares in 4 ways, for example, as 158004900 + 222066195121 = 12570^2 + 471239^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 222224200021 - 2¹ = 222224200019 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222224200031) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12077406 + ... + 12095791.

It is an arithmetic number, because the mean of its divisors is an integer number (28826538615).

Almost surely, 2^222224200021 is an apocalyptic number.

It is an amenable number.

222224200021 is a deficient number, since it is larger than the sum of its proper divisors (8388108899).

222224200021 is a wasteful number, since it uses less digits than its factorization.

222224200021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24173543.

The product of its (nonzero) digits is 512, while the sum is 19.

Adding to 222224200021 its reverse (120002422222), we get a palindrome (342226622243).

The spelling of 222224200021 in words is "two hundred twenty-two billion, two hundred twenty-four million, two hundred thousand, twenty-one".