2228818883281 has 4 divisors (see below), whose sum is σ = 2270872069812. Its totient is φ = 2186765696752.

The previous prime is 2228818883273. The next prime is 2228818883353. The reversal of 2228818883281 is 1823888188222.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1430224646400 + 798594236881 = 1195920^2 + 893641^2 .

It is a cyclic number.

It is not a de Polignac number, because 2228818883281 - 2³ = 2228818883273 is a prime.

It is a super-2 number, since 2×2228818883281² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2228818883201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21026593186 + ... + 21026593291.

It is an arithmetic number, because the mean of its divisors is an integer number (567718017453).

Almost surely, 2^{2228818883281} is an apocalyptic number.

It is an amenable number.

2228818883281 is a deficient number, since it is larger than the sum of its proper divisors (42053186531).

2228818883281 is an equidigital number, since it uses as much as digits as its factorization.

2228818883281 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42053186530.

The product of its digits is 12582912, while the sum is 61.

The spelling of 2228818883281 in words is "two trillion, two hundred twenty-eight billion, eight hundred eighteen million, eight hundred eighty-three thousand, two hundred eighty-one".