1220662918329 has 4 divisors (see below), whose sum is σ = 1627550557776. Its totient is φ = 813775278884.

The previous prime is 1220662918297. The next prime is 1220662918339. The reversal of 1220662918329 is 9238192660221.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1220662918329 - 2⁵ = 1220662918297 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1220662918339) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 203443819719 + ... + 203443819724.

It is an arithmetic number, because the mean of its divisors is an integer number (406887639444).

Almost surely, 2^{1220662918329} is an apocalyptic number.

It is an amenable number.

1220662918329 is a deficient number, since it is larger than the sum of its proper divisors (406887639447).

1220662918329 is an equidigital number, since it uses as much as digits as its factorization.

1220662918329 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 406887639446.

The product of its (nonzero) digits is 1119744, while the sum is 51.

The spelling of 1220662918329 in words is "one trillion, two hundred twenty billion, six hundred sixty-two million, nine hundred eighteen thousand, three hundred twenty-nine".