1220402112313 has 2 divisors, whose sum is σ = 1220402112314. Its totient is φ = 1220402112312.

The previous prime is 1220402112287. The next prime is 1220402112359. The reversal of 1220402112313 is 3132112040221.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1132613163049 + 87788949264 = 1064243^2 + 296292^2 .

It is a cyclic number.

It is not a de Polignac number, because 1220402112313 - 2⁹ = 1220402111801 is a prime.

It is not a weakly prime, because it can be changed into another prime (1220402112373) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 610201056156 + 610201056157.

It is an arithmetic number, because the mean of its divisors is an integer number (610201056157).

Almost surely, 2^{1220402112313} is an apocalyptic number.

It is an amenable number.

1220402112313 is a deficient number, since it is larger than the sum of its proper divisors (1).

1220402112313 is an equidigital number, since it uses as much as digits as its factorization.

1220402112313 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 576, while the sum is 22.

Adding to 1220402112313 its reverse (3132112040221), we get a palindrome (4352514152534).

The spelling of 1220402112313 in words is "one trillion, two hundred twenty billion, four hundred two million, one hundred twelve thousand, three hundred thirteen".