201321222213212 has 24 divisors (see below), whose sum is σ = 353567617268880. Its totient is φ = 100301906436480.

The previous prime is 201321222213211. The next prime is 201321222213239. The reversal of 201321222213212 is 212312222123102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201321222213211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 396368714 + ... + 396876302.

It is an arithmetic number, because the mean of its divisors is an integer number (14731984052870).

Almost surely, 2^{201321222213212} is an apocalyptic number.

It is an amenable number.

201321222213212 is a deficient number, since it is larger than the sum of its proper divisors (152246395055668).

201321222213212 is a wasteful number, since it uses less digits than its factorization.

201321222213212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 860741 (or 860739 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 26.

Adding to 201321222213212 its reverse (212312222123102), we get a palindrome (413633444336314).

The spelling of 201321222213212 in words is "two hundred one trillion, three hundred twenty-one billion, two hundred twenty-two million, two hundred thirteen thousand, two hundred twelve".