111112669 has 2 divisors, whose sum is σ = 111112670. Its totient is φ = 111112668.

The previous prime is 111112667. The next prime is 111112679. The reversal of 111112669 is 966211111.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 84456100 + 26656569 = 9190^2 + 5163^2 .

It is an emirp because it is prime and its reverse (966211111) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 111112669 - 2¹ = 111112667 is a prime.

It is a super-2 number, since 2×111112669² = 24692050424607122, which contains 22 as substring.

Together with 111112667, it forms a pair of twin primes.

It is a plaindrome in base 10.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (111112667) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55556334 + 55556335.

It is an arithmetic number, because the mean of its divisors is an integer number (55556335).

Almost surely, 2^111112669 is an apocalyptic number.

It is an amenable number.

111112669 is a deficient number, since it is larger than the sum of its proper divisors (1).

111112669 is an equidigital number, since it uses as much as digits as its factorization.

111112669 is an evil number, because the sum of its binary digits is even.

The product of its digits is 648, while the sum is 28.

The square root of 111112669 is about 10540.9994307940. Note that the first 3 decimals coincide. The cubic root of 111112669 is about 480.7521036232.

The spelling of 111112669 in words is "one hundred eleven million, one hundred twelve thousand, six hundred sixty-nine".