1220300197 has 2 divisors, whose sum is σ = 1220300198. Its totient is φ = 1220300196.

The previous prime is 1220300161. The next prime is 1220300227. The reversal of 1220300197 is 7910030221.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1219825476 + 474721 = 34926^2 + 689^2 .

It is an emirp because it is prime and its reverse (7910030221) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1220300197 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1220300117) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 610150098 + 610150099.

It is an arithmetic number, because the mean of its divisors is an integer number (610150099).

Almost surely, 2^1220300197 is an apocalyptic number.

It is an amenable number.

1220300197 is a deficient number, since it is larger than the sum of its proper divisors (1).

1220300197 is an equidigital number, since it uses as much as digits as its factorization.

1220300197 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 756, while the sum is 25.

The square root of 1220300197 is about 34932.7954363804. The cubic root of 1220300197 is about 1068.6173648792.

The spelling of 1220300197 in words is "one billion, two hundred twenty million, three hundred thousand, one hundred ninety-seven".