1220320147 has 2 divisors, whose sum is σ = 1220320148. Its totient is φ = 1220320146.

The previous prime is 1220320121. The next prime is 1220320159. The reversal of 1220320147 is 7410230221.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1220320147 - 2⁷ = 1220320019 is a prime.

It is a super-2 number, since 2×1220320147² = 2978362522348203218, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1220320117) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 610160073 + 610160074.

It is an arithmetic number, because the mean of its divisors is an integer number (610160074).

Almost surely, 2^1220320147 is an apocalyptic number.

1220320147 is a deficient number, since it is larger than the sum of its proper divisors (1).

1220320147 is an equidigital number, since it uses as much as digits as its factorization.

1220320147 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 672, while the sum is 22.

The square root of 1220320147 is about 34933.0809835033. The cubic root of 1220320147 is about 1068.6231882551.

Adding to 1220320147 its reverse (7410230221), we get a palindrome (8630550368).

The spelling of 1220320147 in words is "one billion, two hundred twenty million, three hundred twenty thousand, one hundred forty-seven".