1112111969 has 2 divisors, whose sum is σ = 1112111970. Its totient is φ = 1112111968.

The previous prime is 1112111963. The next prime is 1112111983. The reversal of 1112111969 is 9691112111.

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., 708624400 + 403487569 = 26620^2 + 20087^2 .

It is a cyclic number.

It is not a de Polignac number, because 1112111969 - 2¹² = 1112107873 is a prime.

It is a super-2 number, since 2×1112111969² = 2473586063186113922, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1112111963) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 556055984 + 556055985.

It is an arithmetic number, because the mean of its divisors is an integer number (556055985).

Almost surely, 2^1112111969 is an apocalyptic number.

It is an amenable number.

1112111969 is a deficient number, since it is larger than the sum of its proper divisors (1).

1112111969 is an equidigital number, since it uses as much as digits as its factorization.

1112111969 is an evil number, because the sum of its binary digits is even.

The product of its digits is 972, while the sum is 32.

The square root of 1112111969 is about 33348.3428223952. The cubic root of 1112111969 is about 1036.0550651376.

The spelling of 1112111969 in words is "one billion, one hundred twelve million, one hundred eleven thousand, nine hundred sixty-nine".