111228867 has 12 divisors (see below), whose sum is σ = 160949880. Its totient is φ = 74020608.

The previous prime is 111228857. The next prime is 111228877. The reversal of 111228867 is 768822111.

It is an interprime number because it is at equal distance from previous prime (111228857) and next prime (111228877).

It is not a de Polignac number, because 111228867 - 2¹⁹ = 110704579 is a prime.

It is not an unprimeable number, because it can be changed into a prime (111228827) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5517 + ... + 15902.

It is an arithmetic number, because the mean of its divisors is an integer number (13412490).

Almost surely, 2^111228867 is an apocalyptic number.

111228867 is a deficient number, since it is larger than the sum of its proper divisors (49721013).

111228867 is a wasteful number, since it uses less digits than its factorization.

111228867 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22002 (or 21999 counting only the distinct ones).

The product of its digits is 10752, while the sum is 36.

The square root of 111228867 is about 10546.5097070073. The cubic root of 111228867 is about 480.9196301879.

The spelling of 111228867 in words is "one hundred eleven million, two hundred twenty-eight thousand, eight hundred sixty-seven".