201212212330 has 16 divisors (see below), whose sum is σ = 383486805000. Its totient is φ = 75750479872.

The previous prime is 201212212309. The next prime is 201212212343. The reversal of 201212212330 is 33212212102.

It can be written as a sum of positive squares in 4 ways, for example, as 200980959481 + 231252849 = 448309^2 + 15207^2 .

It is a junction number, because it is equal to n+sod(n) for n = 201212212298 and 201212212307.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 591800455 + ... + 591800794.

Almost surely, 2^201212212330 is an apocalyptic number.

201212212330 is a deficient number, since it is larger than the sum of its proper divisors (182274592670).

201212212330 is a wasteful number, since it uses less digits than its factorization.

201212212330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1183601273.

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 201212212330 its reverse (33212212102), we get a palindrome (234424424432).

The spelling of 201212212330 in words is "two hundred one billion, two hundred twelve million, two hundred twelve thousand, three hundred thirty".