111102211011005 has 4 divisors (see below), whose sum is σ = 133322653213212. Its totient is φ = 88881768808800.

The previous prime is 111102211010881. The next prime is 111102211011013. The reversal of 111102211011005 is 500110112201111.

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

It can be written as a sum of positive squares in 2 ways, for example, as 87163678150201 + 23938532860804 = 9336149^2 + 4892702^2 .

It is not a de Polignac number, because 111102211011005 - 2²² = 111102206816701 is a prime.

It is a super-2 number, since 2×111102211011005² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11110221101096 + ... + 11110221101105.

It is an arithmetic number, because the mean of its divisors is an integer number (33330663303303).

Almost surely, 2^{111102211011005} is an apocalyptic number.

It is an amenable number.

111102211011005 is a deficient number, since it is larger than the sum of its proper divisors (22220442202207).

111102211011005 is an equidigital number, since it uses as much as digits as its factorization.

111102211011005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22220442202206.

The product of its (nonzero) digits is 20, while the sum is 17.

Adding to 111102211011005 its reverse (500110112201111), we get a palindrome (611212323212116).

The spelling of 111102211011005 in words is "one hundred eleven trillion, one hundred two billion, two hundred eleven million, eleven thousand, five".