12011220073 has 2 divisors, whose sum is σ = 12011220074. Its totient is φ = 12011220072.

The previous prime is 12011220019. The next prime is 12011220077. The reversal of 12011220073 is 37002211021.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6618961449 + 5392258624 = 81357^2 + 73432^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12011220073 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 12011220073.

It is not a weakly prime, because it can be changed into another prime (12011220077) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6005610036 + 6005610037.

It is an arithmetic number, because the mean of its divisors is an integer number (6005610037).

Almost surely, 2^12011220073 is an apocalyptic number.

It is an amenable number.

12011220073 is a deficient number, since it is larger than the sum of its proper divisors (1).

12011220073 is an equidigital number, since it uses as much as digits as its factorization.

12011220073 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 168, while the sum is 19.

Adding to 12011220073 its reverse (37002211021), we get a palindrome (49013431094).

It can be divided in two parts, 120112 and 20073, that added together give a triangular number (140185 = T₅₂₉).

The spelling of 12011220073 in words is "twelve billion, eleven million, two hundred twenty thousand, seventy-three".