1220251584841 has 2 divisors, whose sum is σ = 1220251584842. Its totient is φ = 1220251584840.

The previous prime is 1220251584829. The next prime is 1220251584901. The reversal of 1220251584841 is 1484851520221.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 973221710400 + 247029874441 = 986520^2 + 497021^2 .

It is a cyclic number.

It is not a de Polignac number, because 1220251584841 - 2¹⁵ = 1220251552073 is a prime.

It is not a weakly prime, because it can be changed into another prime (1220251524841) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 610125792420 + 610125792421.

It is an arithmetic number, because the mean of its divisors is an integer number (610125792421).

Almost surely, 2^{1220251584841} is an apocalyptic number.

It is an amenable number.

1220251584841 is a deficient number, since it is larger than the sum of its proper divisors (1).

1220251584841 is an equidigital number, since it uses as much as digits as its factorization.

1220251584841 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 204800, while the sum is 43.

The spelling of 1220251584841 in words is "one trillion, two hundred twenty billion, two hundred fifty-one million, five hundred eighty-four thousand, eight hundred forty-one".