201226705 has 16 divisors (see below), whose sum is σ = 256141440. Its totient is φ = 151236352.

The previous prime is 201226703. The next prime is 201226721. The reversal of 201226705 is 507622102.

It is not a de Polignac number, because 201226705 - 2¹ = 201226703 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 201226705.

It is not an unprimeable number, because it can be changed into a prime (201226703) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 53166 + ... + 56824.

It is an arithmetic number, because the mean of its divisors is an integer number (16008840).

Almost surely, 2^201226705 is an apocalyptic number.

It is an amenable number.

201226705 is a deficient number, since it is larger than the sum of its proper divisors (54914735).

201226705 is a wasteful number, since it uses less digits than its factorization.

201226705 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4328.

The product of its (nonzero) digits is 1680, while the sum is 25.

The square root of 201226705 is about 14185.4398944834. The cubic root of 201226705 is about 585.9967471776.

Adding to 201226705 its reverse (507622102), we get a palindrome (708848807).

The spelling of 201226705 in words is "two hundred one million, two hundred twenty-six thousand, seven hundred five".