1220500041289 has 2 divisors, whose sum is σ = 1220500041290. Its totient is φ = 1220500041288.

The previous prime is 1220500041287. The next prime is 1220500041337. The reversal of 1220500041289 is 9821400050221.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1106030822400 + 114469218889 = 1051680^2 + 338333^2 .

It is a cyclic number.

It is not a de Polignac number, because 1220500041289 - 2¹ = 1220500041287 is a prime.

Together with 1220500041287, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (1220500041287) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 610250020644 + 610250020645.

It is an arithmetic number, because the mean of its divisors is an integer number (610250020645).

Almost surely, 2^{1220500041289} is an apocalyptic number.

It is an amenable number.

1220500041289 is a deficient number, since it is larger than the sum of its proper divisors (1).

1220500041289 is an equidigital number, since it uses as much as digits as its factorization.

1220500041289 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 11520, while the sum is 34.

The spelling of 1220500041289 in words is "one trillion, two hundred twenty billion, five hundred million, forty-one thousand, two hundred eighty-nine".