111132312169 has 2 divisors, whose sum is σ = 111132312170. Its totient is φ = 111132312168.

The previous prime is 111132312167. The next prime is 111132312251. The reversal of 111132312169 is 961213231111.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 101513606544 + 9618705625 = 318612^2 + 98075^2 .

It is a cyclic number.

It is not a de Polignac number, because 111132312169 - 2¹ = 111132312167 is a prime.

It is a super-2 number, since 2×111132312169² (a number of 23 digits) contains 22 as substring.

Together with 111132312167, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 111132312169.

It is not a weakly prime, because it can be changed into another prime (111132312167) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55566156084 + 55566156085.

It is an arithmetic number, because the mean of its divisors is an integer number (55566156085).

Almost surely, 2^111132312169 is an apocalyptic number.

It is an amenable number.

111132312169 is a deficient number, since it is larger than the sum of its proper divisors (1).

111132312169 is an equidigital number, since it uses as much as digits as its factorization.

111132312169 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1944, while the sum is 31.

The spelling of 111132312169 in words is "one hundred eleven billion, one hundred thirty-two million, three hundred twelve thousand, one hundred sixty-nine".