1220504008247 has 2 divisors, whose sum is σ = 1220504008248. Its totient is φ = 1220504008246.

The previous prime is 1220504008231. The next prime is 1220504008307. The reversal of 1220504008247 is 7428004050221.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1220504008247 - 2⁴ = 1220504008231 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1220504008547) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 610252004123 + 610252004124.

It is an arithmetic number, because the mean of its divisors is an integer number (610252004124).

Almost surely, 2^{1220504008247} is an apocalyptic number.

1220504008247 is a deficient number, since it is larger than the sum of its proper divisors (1).

1220504008247 is an equidigital number, since it uses as much as digits as its factorization.

1220504008247 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 35840, while the sum is 35.

Adding to 1220504008247 its reverse (7428004050221), we get a palindrome (8648508058468).

The spelling of 1220504008247 in words is "one trillion, two hundred twenty billion, five hundred four million, eight thousand, two hundred forty-seven".