222204281 has 8 divisors (see below), whose sum is σ = 239489544. Its totient is φ = 204946560.

The previous prime is 222204251. The next prime is 222204313. The reversal of 222204281 is 182402222.

222204281 = 10540² + 10541².

It can be written as a sum of positive squares in 4 ways, for example, as 462400 + 221741881 = 680^2 + 14891^2 .

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

It is not a de Polignac number, because 222204281 - 2²² = 218009977 is a prime.

It is a super-2 number, since 2×222204281² = 98749484989453922, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (222204211) 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, 11765 + ... + 24141.

It is an arithmetic number, because the mean of its divisors is an integer number (29936193).

Almost surely, 2^222204281 is an apocalyptic number.

222204281 is the 10541-st centered square number.

It is an amenable number.

222204281 is a deficient number, since it is larger than the sum of its proper divisors (17285263).

222204281 is a wasteful number, since it uses less digits than its factorization.

222204281 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13771.

The product of its (nonzero) digits is 1024, while the sum is 23.

The square root of 222204281 is about 14906.5180709648. The cubic root of 222204281 is about 605.6905631565.

The spelling of 222204281 in words is "two hundred twenty-two million, two hundred four thousand, two hundred eighty-one".