1121002020169 has 2 divisors, whose sum is σ = 1121002020170. Its totient is φ = 1121002020168.

The previous prime is 1121002020143. The next prime is 1121002020197. The reversal of 1121002020169 is 9610202001211.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 698486420025 + 422515600144 = 835755^2 + 650012^2 .

It is a cyclic number.

It is not a de Polignac number, because 1121002020169 - 2¹¹ = 1121002018121 is a prime.

It is a super-2 number, since 2×1121002020169² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1121002020269) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 560501010084 + 560501010085.

It is an arithmetic number, because the mean of its divisors is an integer number (560501010085).

Almost surely, 2^{1121002020169} is an apocalyptic number.

It is an amenable number.

1121002020169 is a deficient number, since it is larger than the sum of its proper divisors (1).

1121002020169 is an equidigital number, since it uses as much as digits as its factorization.

1121002020169 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 432, while the sum is 25.

The spelling of 1121002020169 in words is "one trillion, one hundred twenty-one billion, two million, twenty thousand, one hundred sixty-nine".