201222312133212 has 48 divisors (see below), whose sum is σ = 521937446526720. Its totient is φ = 67041964964016.

The previous prime is 201222312133151. The next prime is 201222312133217. The reversal of 201222312133212 is 212331213222102.

201222312133212 is a `hidden beast` number, since 2 + 0 + 1 + 2 + 2 + 2 + 312 + 1 + 332 + 12 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201222312133217) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 446149678 + ... + 446600469.

It is an arithmetic number, because the mean of its divisors is an integer number (10873696802640).

Almost surely, 2^{201222312133212} is an apocalyptic number.

It is an amenable number.

201222312133212 is an abundant number, since it is smaller than the sum of its proper divisors (320715134393508).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

201222312133212 is a wasteful number, since it uses less digits than its factorization.

201222312133212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 892752247 (or 892752239 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 27.

Adding to 201222312133212 its reverse (212331213222102), we get a palindrome (413553525355314).

The spelling of 201222312133212 in words is "two hundred one trillion, two hundred twenty-two billion, three hundred twelve million, one hundred thirty-three thousand, two hundred twelve".