1200220000289 has 2 divisors, whose sum is σ = 1200220000290. Its totient is φ = 1200220000288.

The previous prime is 1200220000207. The next prime is 1200220000363. The reversal of 1200220000289 is 9820000220021.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 949634658064 + 250585342225 = 974492^2 + 500585^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1200220000289 is a prime.

It is not a weakly prime, because it can be changed into another prime (1200220000489) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 600110000144 + 600110000145.

It is an arithmetic number, because the mean of its divisors is an integer number (600110000145).

Almost surely, 2^{1200220000289} is an apocalyptic number.

It is an amenable number.

1200220000289 is a deficient number, since it is larger than the sum of its proper divisors (1).

1200220000289 is an equidigital number, since it uses as much as digits as its factorization.

1200220000289 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 26.

The spelling of 1200220000289 in words is "one trillion, two hundred billion, two hundred twenty million, two hundred eighty-nine", and thus it is an aban number.