201221200002 has 16 divisors (see below), whose sum is σ = 402447755232. Its totient is φ = 67072840800.

The previous prime is 201221199979. The next prime is 201221200051. The reversal of 201221200002 is 200002122102.

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, 398598 + ... + 749214.

It is an arithmetic number, because the mean of its divisors is an integer number (25152984702).

Almost surely, 2^201221200002 is an apocalyptic number.

201221200002 is an abundant number, since it is smaller than the sum of its proper divisors (201226555230).

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

201221200002 is a wasteful number, since it uses less digits than its factorization.

201221200002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 446273.

The product of its (nonzero) digits is 32, while the sum is 12.

Adding to 201221200002 its reverse (200002122102), we get a palindrome (401223322104).

The spelling of 201221200002 in words is "two hundred one billion, two hundred twenty-one million, two hundred thousand, two".