111227689 has 2 divisors, whose sum is σ = 111227690. Its totient is φ = 111227688.

The previous prime is 111227687. The next prime is 111227693. The reversal of 111227689 is 986722111.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 72539289 + 38688400 = 8517^2 + 6220^2 .

It is a cyclic number.

It is not a de Polignac number, because 111227689 - 2¹ = 111227687 is a prime.

Together with 111227687, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (111227681) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55613844 + 55613845.

It is an arithmetic number, because the mean of its divisors is an integer number (55613845).

Almost surely, 2^111227689 is an apocalyptic number.

It is an amenable number.

111227689 is a deficient number, since it is larger than the sum of its proper divisors (1).

111227689 is an equidigital number, since it uses as much as digits as its factorization.

111227689 is an evil number, because the sum of its binary digits is even.

The product of its digits is 12096, while the sum is 37.

The square root of 111227689 is about 10546.4538589992. The cubic root of 111227689 is about 480.9179324113.

The spelling of 111227689 in words is "one hundred eleven million, two hundred twenty-seven thousand, six hundred eighty-nine".