222127281 has 6 divisors (see below), whose sum is σ = 320850530. Its totient is φ = 148084848.

The previous prime is 222127273. The next prime is 222127313. The reversal of 222127281 is 182721222.

It can be written as a sum of positive squares in only one way, i.e., 221861025 + 266256 = 14895^2 + 516^2 .

It is not a de Polignac number, because 222127281 - 2³ = 222127273 is a prime.

It is a super-2 number, since 2×222127281² = 98681057928905922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (222127231) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 12340396 + ... + 12340413.

Almost surely, 2^222127281 is an apocalyptic number.

It is an amenable number.

222127281 is a deficient number, since it is larger than the sum of its proper divisors (98723249).

222127281 is a wasteful number, since it uses less digits than its factorization.

222127281 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24680815 (or 24680812 counting only the distinct ones).

The product of its digits is 1792, while the sum is 27.

The square root of 222127281 is about 14903.9350843997. The cubic root of 222127281 is about 605.6205921650.

The spelling of 222127281 in words is "two hundred twenty-two million, one hundred twenty-seven thousand, two hundred eighty-one".