1201020122089 has 2 divisors, whose sum is σ = 1201020122090. Its totient is φ = 1201020122088.

The previous prime is 1201020122083. The next prime is 1201020122119. The reversal of 1201020122089 is 9802210201021.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 712111513689 + 488908608400 = 843867^2 + 699220^2 .

It is a cyclic number.

It is not a de Polignac number, because 1201020122089 - 2³¹ = 1198872638441 is a prime.

It is not a weakly prime, because it can be changed into another prime (1201020122083) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 600510061044 + 600510061045.

It is an arithmetic number, because the mean of its divisors is an integer number (600510061045).

Almost surely, 2^{1201020122089} is an apocalyptic number.

It is an amenable number.

1201020122089 is a deficient number, since it is larger than the sum of its proper divisors (1).

1201020122089 is an equidigital number, since it uses as much as digits as its factorization.

1201020122089 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1152, while the sum is 28.

The spelling of 1201020122089 in words is "one trillion, two hundred one billion, twenty million, one hundred twenty-two thousand, eighty-nine".