1220220211169 has 2 divisors, whose sum is σ = 1220220211170. Its totient is φ = 1220220211168.

The previous prime is 1220220211153. The next prime is 1220220211181. The reversal of 1220220211169 is 9611120220221.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 894736269025 + 325483942144 = 945905^2 + 570512^2 .

It is a cyclic number.

It is not a de Polignac number, because 1220220211169 - 2⁴ = 1220220211153 is a prime.

It is a super-2 number, since 2×1220220211169² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1220220211369) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 610110105584 + 610110105585.

It is an arithmetic number, because the mean of its divisors is an integer number (610110105585).

Almost surely, 2^{1220220211169} is an apocalyptic number.

It is an amenable number.

1220220211169 is a deficient number, since it is larger than the sum of its proper divisors (1).

1220220211169 is an equidigital number, since it uses as much as digits as its factorization.

1220220211169 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1728, while the sum is 29.

The spelling of 1220220211169 in words is "one trillion, two hundred twenty billion, two hundred twenty million, two hundred eleven thousand, one hundred sixty-nine".