111223004491 has 4 divisors (see below), whose sum is σ = 111245285272. Its totient is φ = 111200723712.

The previous prime is 111223004489. The next prime is 111223004579. The reversal of 111223004491 is 194400322111.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 111223004491 - 2¹ = 111223004489 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (111223004461) 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, 11132901 + ... + 11142886.

It is an arithmetic number, because the mean of its divisors is an integer number (27811321318).

Almost surely, 2^111223004491 is an apocalyptic number.

111223004491 is a deficient number, since it is larger than the sum of its proper divisors (22280781).

111223004491 is an equidigital number, since it uses as much as digits as its factorization.

111223004491 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22280780.

The product of its (nonzero) digits is 1728, while the sum is 28.

The spelling of 111223004491 in words is "one hundred eleven billion, two hundred twenty-three million, four thousand, four hundred ninety-one".