1121111220169 has 2 divisors, whose sum is σ = 1121111220170. Its totient is φ = 1121111220168.

The previous prime is 1121111220137. The next prime is 1121111220209. The reversal of 1121111220169 is 9610221111211.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 584865505225 + 536245714944 = 764765^2 + 732288^2 .

It is a cyclic number.

It is not a de Polignac number, because 1121111220169 - 2⁵ = 1121111220137 is a prime.

It is a super-4 number, since 4×1121111220169⁴ (a number of 49 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

It is not a weakly prime, because it can be changed into another prime (1121711220169) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 560555610084 + 560555610085.

It is an arithmetic number, because the mean of its divisors is an integer number (560555610085).

Almost surely, 2^{1121111220169} is an apocalyptic number.

It is an amenable number.

1121111220169 is a deficient number, since it is larger than the sum of its proper divisors (1).

1121111220169 is an equidigital number, since it uses as much as digits as its factorization.

1121111220169 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 432, while the sum is 28.

The spelling of 1121111220169 in words is "one trillion, one hundred twenty-one billion, one hundred eleven million, two hundred twenty thousand, one hundred sixty-nine".