11112120169 has 2 divisors, whose sum is σ = 11112120170. Its totient is φ = 11112120168.

The previous prime is 11112120133. The next prime is 11112120209. The reversal of 11112120169 is 96102121111.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11101361769 + 10758400 = 105363^2 + 3280^2 .

It is a cyclic number.

It is not a de Polignac number, because 11112120169 - 2¹⁵ = 11112087401 is a prime.

It is a super-2 number, since 2×11112120169² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (11112120109) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5556060084 + 5556060085.

It is an arithmetic number, because the mean of its divisors is an integer number (5556060085).

Almost surely, 2^11112120169 is an apocalyptic number.

It is an amenable number.

11112120169 is a deficient number, since it is larger than the sum of its proper divisors (1).

11112120169 is an equidigital number, since it uses as much as digits as its factorization.

11112120169 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 216, while the sum is 25.

The spelling of 11112120169 in words is "eleven billion, one hundred twelve million, one hundred twenty thousand, one hundred sixty-nine".