201212212 has 6 divisors (see below), whose sum is σ = 352121378. Its totient is φ = 100606104.

The previous prime is 201212161. The next prime is 201212273. The reversal of 201212212 is 212212102.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 151142436 + 50069776 = 12294^2 + 7076^2 .

It is a junction number, because it is equal to n+sod(n) for n = 201212192 and 201212201.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25151523 + ... + 25151530.

Almost surely, 2^201212212 is an apocalyptic number.

It is an amenable number.

201212212 is a deficient number, since it is larger than the sum of its proper divisors (150909166).

201212212 is a wasteful number, since it uses less digits than its factorization.

201212212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50303057 (or 50303055 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 13.

The square root of 201212212 is about 14184.9290445881. The cubic root of 201212212 is about 585.9826783777.

Adding to 201212212 its reverse (212212102), we get a palindrome (413424314).

The spelling of 201212212 in words is "two hundred one million, two hundred twelve thousand, two hundred twelve".