1220301311 has 2 divisors, whose sum is σ = 1220301312. Its totient is φ = 1220301310.

The previous prime is 1220301283. The next prime is 1220301323. The reversal of 1220301311 is 1131030221.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1220301311 - 2¹⁰ = 1220300287 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1220301371) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 610150655 + 610150656.

It is an arithmetic number, because the mean of its divisors is an integer number (610150656).

Almost surely, 2^1220301311 is an apocalyptic number.

1220301311 is a deficient number, since it is larger than the sum of its proper divisors (1).

1220301311 is an equidigital number, since it uses as much as digits as its factorization.

1220301311 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 36, while the sum is 14.

The square root of 1220301311 is about 34932.8113812788. The cubic root of 1220301311 is about 1068.6176900559.

Adding to 1220301311 its reverse (1131030221), we get a palindrome (2351331532).

The spelling of 1220301311 in words is "one billion, two hundred twenty million, three hundred one thousand, three hundred eleven".