1201223232289 has 2 divisors, whose sum is σ = 1201223232290. Its totient is φ = 1201223232288.

The previous prime is 1201223232269. The next prime is 1201223232323. The reversal of 1201223232289 is 9822323221021.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 791418406689 + 409804825600 = 889617^2 + 640160^2 .

It is an emirp because it is prime and its reverse (9822323221021) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1201223232289 - 2⁵ = 1201223232257 is a prime.

It is not a weakly prime, because it can be changed into another prime (1201223232269) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 600611616144 + 600611616145.

It is an arithmetic number, because the mean of its divisors is an integer number (600611616145).

Almost surely, 2^{1201223232289} is an apocalyptic number.

It is an amenable number.

1201223232289 is a deficient number, since it is larger than the sum of its proper divisors (1).

1201223232289 is an equidigital number, since it uses as much as digits as its factorization.

1201223232289 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 41472, while the sum is 37.

The spelling of 1201223232289 in words is "one trillion, two hundred one billion, two hundred twenty-three million, two hundred thirty-two thousand, two hundred eighty-nine".