1220098169 has 2 divisors, whose sum is σ = 1220098170. Its totient is φ = 1220098168.

The previous prime is 1220098163. The next prime is 1220098171. The reversal of 1220098169 is 9618900221.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1156816144 + 63282025 = 34012^2 + 7955^2 .

It is a cyclic number.

It is not a de Polignac number, because 1220098169 - 2⁴ = 1220098153 is a prime.

It is a super-2 number, since 2×1220098169² = 2977279083994305122, which contains 22 as substring.

Together with 1220098171, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (1220098163) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 610049084 + 610049085.

It is an arithmetic number, because the mean of its divisors is an integer number (610049085).

Almost surely, 2^1220098169 is an apocalyptic number.

It is an amenable number.

1220098169 is a deficient number, since it is larger than the sum of its proper divisors (1).

1220098169 is an equidigital number, since it uses as much as digits as its factorization.

1220098169 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 15552, while the sum is 38.

The square root of 1220098169 is about 34929.9036500246. The cubic root of 1220098169 is about 1068.5583896247.

The spelling of 1220098169 in words is "one billion, two hundred twenty million, ninety-eight thousand, one hundred sixty-nine".