111244666889 has 4 divisors (see below), whose sum is σ = 111314152980. Its totient is φ = 111175180800.

The previous prime is 111244666879. The next prime is 111244666891. The reversal of 111244666889 is 988666442111.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 988666442111 = 77929 ⋅12686759.

It can be written as a sum of positive squares in 2 ways, for example, as 107654859664 + 3589807225 = 328108^2 + 59915^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-111244666889 is a prime.

It is a super-2 number, since 2×111244666889² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a plaindrome in base 10.

It is not an unprimeable number, because it can be changed into a prime (111244666879) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 34740644 + ... + 34743845.

It is an arithmetic number, because the mean of its divisors is an integer number (27828538245).

Almost surely, 2^111244666889 is an apocalyptic number.

It is an amenable number.

111244666889 is a deficient number, since it is larger than the sum of its proper divisors (69486091).

111244666889 is an equidigital number, since it uses as much as digits as its factorization.

111244666889 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69486090.

The product of its digits is 3981312, while the sum is 56.

The spelling of 111244666889 in words is "one hundred eleven billion, two hundred forty-four million, six hundred sixty-six thousand, eight hundred eighty-nine".