1201221201097 has 2 divisors, whose sum is σ = 1201221201098. Its totient is φ = 1201221201096.

The previous prime is 1201221201077. The next prime is 1201221201107. The reversal of 1201221201097 is 7901021221021.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1178503476921 + 22717724176 = 1085589^2 + 150724^2 .

It is a cyclic number.

It is not a de Polignac number, because 1201221201097 - 2³⁵ = 1166861462729 is a prime.

It is not a weakly prime, because it can be changed into another prime (1201221201077) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 600610600548 + 600610600549.

It is an arithmetic number, because the mean of its divisors is an integer number (600610600549).

Almost surely, 2^{1201221201097} is an apocalyptic number.

It is an amenable number.

1201221201097 is a deficient number, since it is larger than the sum of its proper divisors (1).

1201221201097 is an equidigital number, since it uses as much as digits as its factorization.

1201221201097 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1008, while the sum is 28.

The spelling of 1201221201097 in words is "one trillion, two hundred one billion, two hundred twenty-one million, two hundred one thousand, ninety-seven".