1220326663331 has 2 divisors, whose sum is σ = 1220326663332. Its totient is φ = 1220326663330.

The previous prime is 1220326663291. The next prime is 1220326663363. The reversal of 1220326663331 is 1333666230221.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1220326663331 - 2¹⁰ = 1220326662307 is a prime.

It is a super-2 number, since 2×1220326663331² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1220326663531) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 610163331665 + 610163331666.

It is an arithmetic number, because the mean of its divisors is an integer number (610163331666).

Almost surely, 2^{1220326663331} is an apocalyptic number.

1220326663331 is a deficient number, since it is larger than the sum of its proper divisors (1).

1220326663331 is an equidigital number, since it uses as much as digits as its factorization.

1220326663331 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 139968, while the sum is 38.

The spelling of 1220326663331 in words is "one trillion, two hundred twenty billion, three hundred twenty-six million, six hundred sixty-three thousand, three hundred thirty-one".