1220220211241 has 2 divisors, whose sum is σ = 1220220211242. Its totient is φ = 1220220211240.

The previous prime is 1220220211219. The next prime is 1220220211271. The reversal of 1220220211241 is 1421120220221.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1210211209216 + 10009002025 = 1100096^2 + 100045^2 .

It is a cyclic number.

It is not a de Polignac number, because 1220220211241 - 2¹⁸ = 1220219949097 is a prime.

It is not a weakly prime, because it can be changed into another prime (1220220211271) 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, 610110105620 + 610110105621.

It is an arithmetic number, because the mean of its divisors is an integer number (610110105621).

Almost surely, 2^{1220220211241} is an apocalyptic number.

It is an amenable number.

1220220211241 is a deficient number, since it is larger than the sum of its proper divisors (1).

1220220211241 is an equidigital number, since it uses as much as digits as its factorization.

1220220211241 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 256, while the sum is 20.

Adding to 1220220211241 its reverse (1421120220221), we get a palindrome (2641340431462).

The spelling of 1220220211241 in words is "one trillion, two hundred twenty billion, two hundred twenty million, two hundred eleven thousand, two hundred forty-one".