111223245 has 64 divisors (see below), whose sum is σ = 215930880. Its totient is φ = 47755008.

The previous prime is 111223243. The next prime is 111223247. The reversal of 111223245 is 542322111.

It is an interprime number because it is at equal distance from previous prime (111223243) and next prime (111223247).

It is not a de Polignac number, because 111223245 - 2¹ = 111223243 is a prime.

It is a super-2 number, since 2×111223245² = 24741220456660050, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111223243) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 392874 + ... + 393156.

It is an arithmetic number, because the mean of its divisors is an integer number (3373920).

Almost surely, 2^111223245 is an apocalyptic number.

111223245 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

111223245 is a deficient number, since it is larger than the sum of its proper divisors (104707635).

111223245 is a wasteful number, since it uses less digits than its factorization.

111223245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 514.

The product of its digits is 480, while the sum is 21.

The square root of 111223245 is about 10546.2431699634. The cubic root of 111223245 is about 480.9115274481.

Adding to 111223245 its reverse (542322111), we get a palindrome (653545356).

The spelling of 111223245 in words is "one hundred eleven million, two hundred twenty-three thousand, two hundred forty-five".