201223105 has 8 divisors (see below), whose sum is σ = 243957672. Its totient is φ = 159318528.

The previous prime is 201223097. The next prime is 201223109. The reversal of 201223105 is 501322102.

It can be written as a sum of positive squares in 4 ways, for example, as 69822736 + 131400369 = 8356^2 + 11463^2 .

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 201223105 - 2³ = 201223097 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (201223109) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 206962 + ... + 207931.

It is an arithmetic number, because the mean of its divisors is an integer number (30494709).

Almost surely, 2^201223105 is an apocalyptic number.

It is an amenable number.

201223105 is a deficient number, since it is larger than the sum of its proper divisors (42734567).

201223105 is an equidigital number, since it uses as much as digits as its factorization.

201223105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 414995.

The product of its (nonzero) digits is 120, while the sum is 16.

The square root of 201223105 is about 14185.3130032439. The cubic root of 201223105 is about 585.9932526102.

Adding to 201223105 its reverse (501322102), we get a palindrome (702545207).

The spelling of 201223105 in words is "two hundred one million, two hundred twenty-three thousand, one hundred five".