1224422281 has 2 divisors, whose sum is σ = 1224422282. Its totient is φ = 1224422280.

The previous prime is 1224422279. The next prime is 1224422321. The reversal of 1224422281 is 1822244221.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 761484025 + 462938256 = 27595^2 + 21516^2 .

It is a cyclic number.

It is not a de Polignac number, because 1224422281 - 2¹ = 1224422279 is a prime.

It is a super-2 number, since 2×1224422281² = 2998419844418485922, which contains 22 as substring.

Together with 1224422279, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (1224422201) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 612211140 + 612211141.

It is an arithmetic number, because the mean of its divisors is an integer number (612211141).

Almost surely, 2^1224422281 is an apocalyptic number.

It is an amenable number.

1224422281 is a deficient number, since it is larger than the sum of its proper divisors (1).

1224422281 is an equidigital number, since it uses as much as digits as its factorization.

1224422281 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4096, while the sum is 28.

The square root of 1224422281 is about 34991.7458981400. The cubic root of 1224422281 is about 1069.8192494636.

The spelling of 1224422281 in words is "one billion, two hundred twenty-four million, four hundred twenty-two thousand, two hundred eighty-one".