201112122005 has 8 divisors (see below), whose sum is σ = 241408754232. Its totient is φ = 160840225728.

The previous prime is 201112121989. The next prime is 201112122019. The reversal of 201112122005 is 500221211102.

It can be written as a sum of positive squares in 4 ways, for example, as 131269260721 + 69842861284 = 362311^2 + 264278^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 201112122005 - 2⁴ = 201112121989 is a prime.

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 7 ways as a sum of consecutive naturals, for example, 6166094 + ... + 6198623.

It is an arithmetic number, because the mean of its divisors is an integer number (30176094279).

Almost surely, 2^201112122005 is an apocalyptic number.

It is an amenable number.

201112122005 is a deficient number, since it is larger than the sum of its proper divisors (40296632227).

201112122005 is a wasteful number, since it uses less digits than its factorization.

201112122005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12367975.

The product of its (nonzero) digits is 80, while the sum is 17.

Adding to 201112122005 its reverse (500221211102), we get a palindrome (701333333107).

The spelling of 201112122005 in words is "two hundred one billion, one hundred twelve million, one hundred twenty-two thousand, five".