1220913241 has 2 divisors, whose sum is σ = 1220913242. Its totient is φ = 1220913240.

The previous prime is 1220913227. The next prime is 1220913257. The reversal of 1220913241 is 1423190221.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1214174025 + 6739216 = 34845^2 + 2596^2 .

It is a cyclic number.

It is not a de Polignac number, because 1220913241 - 2¹¹ = 1220911193 is a prime.

It is not a weakly prime, because it can be changed into another prime (1220910241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 610456620 + 610456621.

It is an arithmetic number, because the mean of its divisors is an integer number (610456621).

Almost surely, 2^1220913241 is an apocalyptic number.

It is an amenable number.

1220913241 is a deficient number, since it is larger than the sum of its proper divisors (1).

1220913241 is an equidigital number, since it uses as much as digits as its factorization.

1220913241 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 864, while the sum is 25.

The square root of 1220913241 is about 34941.5689544703. The cubic root of 1220913241 is about 1068.7962825459.

The spelling of 1220913241 in words is "one billion, two hundred twenty million, nine hundred thirteen thousand, two hundred forty-one".