1099242281 has 2 divisors, whose sum is σ = 1099242282. Its totient is φ = 1099242280.

The previous prime is 1099242257. The next prime is 1099242307. The reversal of 1099242281 is 1822429901.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 652342681 + 446899600 = 25541^2 + 21140^2 .

It is a cyclic number.

It is not a de Polignac number, because 1099242281 - 2⁶ = 1099242217 is a prime.

It is a super-2 number, since 2×1099242281² = 2416667184676165922, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1099242241) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 549621140 + 549621141.

It is an arithmetic number, because the mean of its divisors is an integer number (549621141).

Almost surely, 2^1099242281 is an apocalyptic number.

It is an amenable number.

1099242281 is a deficient number, since it is larger than the sum of its proper divisors (1).

1099242281 is an equidigital number, since it uses as much as digits as its factorization.

1099242281 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 20736, while the sum is 38.

The square root of 1099242281 is about 33154.8228920017. The cubic root of 1099242281 is about 1032.0430372979.

The spelling of 1099242281 in words is "one billion, ninety-nine million, two hundred forty-two thousand, two hundred eighty-one".