11112227789 has 8 divisors (see below), whose sum is σ = 12016673592. Its totient is φ = 10214876160.

The previous prime is 11112227771. The next prime is 11112227807. The reversal of 11112227789 is 98772221111.

It is an interprime number because it is at equal distance from previous prime (11112227771) and next prime (11112227807).

It can be written as a sum of positive squares in 4 ways, for example, as 2796611689 + 8315616100 = 52883^2 + 91190^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 11112227789 - 2¹² = 11112223693 is a prime.

It is a Duffinian number.

It is a plaindrome in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11112227989) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1770284 + ... + 1776549.

It is an arithmetic number, because the mean of its divisors is an integer number (1502084199).

Almost surely, 2^11112227789 is an apocalyptic number.

It is an amenable number.

11112227789 is a deficient number, since it is larger than the sum of its proper divisors (904445803).

11112227789 is a wasteful number, since it uses less digits than its factorization.

11112227789 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3547087.

The product of its digits is 28224, while the sum is 41.

The spelling of 11112227789 in words is "eleven billion, one hundred twelve million, two hundred twenty-seven thousand, seven hundred eighty-nine".