1232211109 has 2 divisors, whose sum is σ = 1232211110. Its totient is φ = 1232211108.

The previous prime is 1232211067. The next prime is 1232211191. The reversal of 1232211109 is 9011122321.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 745126209 + 487084900 = 27297^2 + 22070^2 .

It is a cyclic number.

It is not a de Polignac number, because 1232211109 - 2¹⁷ = 1232080037 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1232211109.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1232211209) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 616105554 + 616105555.

It is an arithmetic number, because the mean of its divisors is an integer number (616105555).

Almost surely, 2^1232211109 is an apocalyptic number.

It is an amenable number.

1232211109 is a deficient number, since it is larger than the sum of its proper divisors (1).

1232211109 is an equidigital number, since it uses as much as digits as its factorization.

1232211109 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 216, while the sum is 22.

The square root of 1232211109 is about 35102.8646836693. The cubic root of 1232211109 is about 1072.0829106833.

The spelling of 1232211109 in words is "one billion, two hundred thirty-two million, two hundred eleven thousand, one hundred nine".