201123212 has 24 divisors (see below), whose sum is σ = 366273600. Its totient is φ = 96553296.

The previous prime is 201123187. The next prime is 201123229. The reversal of 201123212 is 212321102.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 239 + ... + 20057.

It is an arithmetic number, because the mean of its divisors is an integer number (15261400).

Almost surely, 2^201123212 is an apocalyptic number.

It is an amenable number.

201123212 is a deficient number, since it is larger than the sum of its proper divisors (165150388).

201123212 is a wasteful number, since it uses less digits than its factorization.

201123212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19925 (or 19923 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 14.

The square root of 201123212 is about 14181.7915652431. The cubic root of 201123212 is about 585.8962685303.

Adding to 201123212 its reverse (212321102), we get a palindrome (413444314).

The spelling of 201123212 in words is "two hundred one million, one hundred twenty-three thousand, two hundred twelve".