1220155301 has 2 divisors, whose sum is σ = 1220155302. Its totient is φ = 1220155300.

The previous prime is 1220155289. The next prime is 1220155351. The reversal of 1220155301 is 1035510221.

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., 805992100 + 414163201 = 28390^2 + 20351^2 .

It is a cyclic number.

It is not a de Polignac number, because 1220155301 - 2²² = 1215960997 is a prime.

It is a pancake number, because a pancake can be divided into 1220155301 parts by 49399 straight cuts.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1220155351) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 610077650 + 610077651.

It is an arithmetic number, because the mean of its divisors is an integer number (610077651).

Almost surely, 2^1220155301 is an apocalyptic number.

It is an amenable number.

1220155301 is a deficient number, since it is larger than the sum of its proper divisors (1).

1220155301 is an equidigital number, since it uses as much as digits as its factorization.

1220155301 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 300, while the sum is 20.

The square root of 1220155301 is about 34930.7214497496. The cubic root of 1220155301 is about 1068.5750680436.

Adding to 1220155301 its reverse (1035510221), we get a palindrome (2255665522).

The spelling of 1220155301 in words is "one billion, two hundred twenty million, one hundred fifty-five thousand, three hundred one".