201221100211012 has 24 divisors (see below), whose sum is σ = 408110400432000. Its totient is φ = 85023000088320.

The previous prime is 201221100210997. The next prime is 201221100211037. The reversal of 201221100211012 is 210112001122102.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 50608926637 + ... + 50608930612.

It is an arithmetic number, because the mean of its divisors is an integer number (17004600018000).

Almost surely, 2^{201221100211012} is an apocalyptic number.

It is an amenable number.

201221100211012 is an abundant number, since it is smaller than the sum of its proper divisors (206889300220988).

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

201221100211012 is a wasteful number, since it uses less digits than its factorization.

201221100211012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 101217857331 (or 101217857329 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 201221100211012 its reverse (210112001122102), we get a palindrome (411333101333114).

The spelling of 201221100211012 in words is "two hundred one trillion, two hundred twenty-one billion, one hundred million, two hundred eleven thousand, twelve".