201212222 has 8 divisors (see below), whose sum is σ = 308837496. Its totient is φ = 98266392.

The previous prime is 201212161. The next prime is 201212273. The reversal of 201212222 is 222212102.

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

It is a junction number, because it is equal to n+sod(n) for n = 201212197 and 201212206.

It is a congruent 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 3 ways as a sum of consecutive naturals, for example, 1169753 + ... + 1169924.

It is an arithmetic number, because the mean of its divisors is an integer number (38604687).

Almost surely, 2^201212222 is an apocalyptic number.

201212222 is a deficient number, since it is larger than the sum of its proper divisors (107625274).

201212222 is a wasteful number, since it uses less digits than its factorization.

201212222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2339722.

The product of its (nonzero) digits is 64, while the sum is 14.

The square root of 201212222 is about 14184.9293970749. The cubic root of 201212222 is about 585.9826880852.

Adding to 201212222 its reverse (222212102), we get a palindrome (423424324).

The spelling of 201212222 in words is "two hundred one million, two hundred twelve thousand, two hundred twenty-two".