1220322469057 has 2 divisors, whose sum is σ = 1220322469058. Its totient is φ = 1220322469056.

The previous prime is 1220322469007. The next prime is 1220322469097. The reversal of 1220322469057 is 7509642230221.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 861510686976 + 358811782081 = 928176^2 + 599009^2 .

It is an emirp because it is prime and its reverse (7509642230221) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1220322469057 - 2²⁷ = 1220188251329 is a prime.

It is not a weakly prime, because it can be changed into another prime (1220322469007) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 610161234528 + 610161234529.

It is an arithmetic number, because the mean of its divisors is an integer number (610161234529).

Almost surely, 2^{1220322469057} is an apocalyptic number.

It is an amenable number.

1220322469057 is a deficient number, since it is larger than the sum of its proper divisors (1).

1220322469057 is an equidigital number, since it uses as much as digits as its factorization.

1220322469057 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 362880, while the sum is 43.

Adding to 1220322469057 its reverse (7509642230221), we get a palindrome (8729964699278).

The spelling of 1220322469057 in words is "one trillion, two hundred twenty billion, three hundred twenty-two million, four hundred sixty-nine thousand, fifty-seven".