111228399995 has 4 divisors (see below), whose sum is σ = 133474080000. Its totient is φ = 88982719992.

The previous prime is 111228399959. The next prime is 111228400009. The reversal of 111228399995 is 599993822111.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 599993822111 = 429953 ⋅1395487.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-111228399995 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11122839995 + ... + 11122840004.

It is an arithmetic number, because the mean of its divisors is an integer number (33368520000).

Almost surely, 2^111228399995 is an apocalyptic number.

111228399995 is a deficient number, since it is larger than the sum of its proper divisors (22245680005).

111228399995 is an equidigital number, since it uses as much as digits as its factorization.

111228399995 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22245680004.

The product of its digits is 3149280, while the sum is 59.

The spelling of 111228399995 in words is "one hundred eleven billion, two hundred twenty-eight million, three hundred ninety-nine thousand, nine hundred ninety-five".