201222123 has 4 divisors (see below), whose sum is σ = 268296168. Its totient is φ = 134148080.

The previous prime is 201222121. The next prime is 201222163. The reversal of 201222123 is 321222102.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 201222123 - 2¹ = 201222121 is a prime.

It is not an unprimeable number, because it can be changed into a prime (201222121) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 33537018 + ... + 33537023.

It is an arithmetic number, because the mean of its divisors is an integer number (67074042).

Almost surely, 2^201222123 is an apocalyptic number.

201222123 is a deficient number, since it is larger than the sum of its proper divisors (67074045).

201222123 is an equidigital number, since it uses as much as digits as its factorization.

201222123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67074044.

The product of its (nonzero) digits is 96, while the sum is 15.

The square root of 201222123 is about 14185.2783899365. The cubic root of 201222123 is about 585.9922993626.

Adding to 201222123 its reverse (321222102), we get a palindrome (522444225).

The spelling of 201222123 in words is "two hundred one million, two hundred twenty-two thousand, one hundred twenty-three".