1211442097 has 2 divisors, whose sum is σ = 1211442098. Its totient is φ = 1211442096.

The previous prime is 1211442073. The next prime is 1211442161. The reversal of 1211442097 is 7902441121.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1112956321 + 98485776 = 33361^2 + 9924^2 .

It is a cyclic number.

It is not a de Polignac number, because 1211442097 - 2¹¹ = 1211440049 is a prime.

It is a super-3 number, since 3×1211442097³ (a number of 28 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (1211442007) 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, 605721048 + 605721049.

It is an arithmetic number, because the mean of its divisors is an integer number (605721049).

Almost surely, 2^1211442097 is an apocalyptic number.

It is an amenable number.

1211442097 is a deficient number, since it is larger than the sum of its proper divisors (1).

1211442097 is an equidigital number, since it uses as much as digits as its factorization.

1211442097 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4032, while the sum is 31.

The square root of 1211442097 is about 34805.7767762767. The cubic root of 1211442097 is about 1066.0254025254.

The spelling of 1211442097 in words is "one billion, two hundred eleven million, four hundred forty-two thousand, ninety-seven".