1061223209 has 2 divisors, whose sum is σ = 1061223210. Its totient is φ = 1061223208.

The previous prime is 1061223157. The next prime is 1061223223. The reversal of 1061223209 is 9023221601.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 926593600 + 134629609 = 30440^2 + 11603^2 .

It is a cyclic number.

It is not a de Polignac number, because 1061223209 - 2¹⁶ = 1061157673 is a prime.

It is a super-2 number, since 2×1061223209² = 2252389398640515362, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1061223239) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 530611604 + 530611605.

It is an arithmetic number, because the mean of its divisors is an integer number (530611605).

Almost surely, 2^1061223209 is an apocalyptic number.

It is an amenable number.

1061223209 is a deficient number, since it is larger than the sum of its proper divisors (1).

1061223209 is an equidigital number, since it uses as much as digits as its factorization.

1061223209 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1296, while the sum is 26.

The square root of 1061223209 is about 32576.4210587965. The cubic root of 1061223209 is about 1020.0048727821.

The spelling of 1061223209 in words is "one billion, sixty-one million, two hundred twenty-three thousand, two hundred nine".