1111235556889 has 4 divisors (see below), whose sum is σ = 1112372953524. Its totient is φ = 1110098160256.

The previous prime is 1111235556883. The next prime is 1111235556911. The reversal of 1111235556889 is 9886555321111.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 971423129664 + 139812427225 = 985608^2 + 373915^2 .

It is a cyclic number.

It is not a de Polignac number, because 1111235556889 - 2⁵ = 1111235556857 is a prime.

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 (1111235556883) 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, 568696852 + ... + 568698805.

It is an arithmetic number, because the mean of its divisors is an integer number (278093238381).

Almost surely, 2^{1111235556889} is an apocalyptic number.

It is an amenable number.

1111235556889 is a deficient number, since it is larger than the sum of its proper divisors (1137396635).

1111235556889 is an equidigital number, since it uses as much as digits as its factorization.

1111235556889 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1137396634.

The product of its digits is 2592000, while the sum is 55.

The spelling of 1111235556889 in words is "one trillion, one hundred eleven billion, two hundred thirty-five million, five hundred fifty-six thousand, eight hundred eighty-nine".