1202020320289 has 2 divisors, whose sum is σ = 1202020320290. Its totient is φ = 1202020320288.

The previous prime is 1202020320251. The next prime is 1202020320299. The reversal of 1202020320289 is 9820230202021.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1080317020689 + 121703299600 = 1039383^2 + 348860^2 .

It is a cyclic number.

It is not a de Polignac number, because 1202020320289 - 2⁷ = 1202020320161 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1202020320289.

It is not a weakly prime, because it can be changed into another prime (1202020320299) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 601010160144 + 601010160145.

It is an arithmetic number, because the mean of its divisors is an integer number (601010160145).

Almost surely, 2^{1202020320289} is an apocalyptic number.

It is an amenable number.

1202020320289 is a deficient number, since it is larger than the sum of its proper divisors (1).

1202020320289 is an equidigital number, since it uses as much as digits as its factorization.

1202020320289 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6912, while the sum is 31.

The spelling of 1202020320289 in words is "one trillion, two hundred two billion, twenty million, three hundred twenty thousand, two hundred eighty-nine".