1122228281 has 2 divisors, whose sum is σ = 1122228282. Its totient is φ = 1122228280.

The previous prime is 1122228229. The next prime is 1122228287. The reversal of 1122228281 is 1828222211.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 836077225 + 286151056 = 28915^2 + 16916^2 .

It is a cyclic number.

It is not a de Polignac number, because 1122228281 - 2¹⁴ = 1122211897 is a prime.

It is a super-2 number, since 2×1122228281² = 2518792629352429922, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1122228287) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 561114140 + 561114141.

It is an arithmetic number, because the mean of its divisors is an integer number (561114141).

Almost surely, 2^1122228281 is an apocalyptic number.

It is an amenable number.

1122228281 is a deficient number, since it is larger than the sum of its proper divisors (1).

1122228281 is an equidigital number, since it uses as much as digits as its factorization.

1122228281 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2048, while the sum is 29.

The square root of 1122228281 is about 33499.6758342525. The cubic root of 1122228281 is about 1039.1870746094.

The spelling of 1122228281 in words is "one billion, one hundred twenty-two million, two hundred twenty-eight thousand, two hundred eighty-one".