111222277889 has 4 divisors (see below), whose sum is σ = 111499640580. Its totient is φ = 110944915200.

The previous prime is 111222277877. The next prime is 111222277931. The reversal of 111222277889 is 988772222111.

It is a happy number.

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 110104512400 + 1117765489 = 331820^2 + 33433^2 .

It is a cyclic number.

It is not a de Polignac number, because 111222277889 - 2³⁶ = 42502801153 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 (111222277819) 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, 138680744 + ... + 138681545.

It is an arithmetic number, because the mean of its divisors is an integer number (27874910145).

Almost surely, 2^111222277889 is an apocalyptic number.

It is an amenable number.

111222277889 is a deficient number, since it is larger than the sum of its proper divisors (277362691).

111222277889 is an equidigital number, since it uses as much as digits as its factorization.

111222277889 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 277362690.

The product of its digits is 451584, while the sum is 50.

The spelling of 111222277889 in words is "one hundred eleven billion, two hundred twenty-two million, two hundred seventy-seven thousand, eight hundred eighty-nine".