111335668889 has 4 divisors (see below), whose sum is σ = 111444715620. Its totient is φ = 111226622160.

The previous prime is 111335668853. The next prime is 111335668901. The reversal of 111335668889 is 988866533111.

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: 988866533111 = 461693 ⋅2141827.

It can be written as a sum of positive squares in 2 ways, for example, as 35825025625 + 75510643264 = 189275^2 + 274792^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-111335668889 is a prime.

It is a super-2 number, since 2×111335668889² (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 (111335664889) 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, 54521834 + ... + 54523875.

It is an arithmetic number, because the mean of its divisors is an integer number (27861178905).

Almost surely, 2^111335668889 is an apocalyptic number.

It is an amenable number.

111335668889 is a deficient number, since it is larger than the sum of its proper divisors (109046731).

111335668889 is a wasteful number, since it uses less digits than its factorization.

111335668889 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 109046730.

The product of its digits is 7464960, while the sum is 59.

The spelling of 111335668889 in words is "one hundred eleven billion, three hundred thirty-five million, six hundred sixty-eight thousand, eight hundred eighty-nine".