201221000012012 has 96 divisors (see below), whose sum is σ = 373032825984000. Its totient is φ = 94818208826880.

The previous prime is 201221000011991. The next prime is 201221000012029. The reversal of 201221000012012 is 210210000122102.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 8609846687 + ... + 8609870057.

It is an arithmetic number, because the mean of its divisors is an integer number (3885758604000).

Almost surely, 2^{201221000012012} is an apocalyptic number.

It is an amenable number.

201221000012012 is a deficient number, since it is larger than the sum of its proper divisors (171811825971988).

201221000012012 is a wasteful number, since it uses less digits than its factorization.

201221000012012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27639 (or 27637 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 201221000012012 its reverse (210210000122102), we get a palindrome (411431000134114).

The spelling of 201221000012012 in words is "two hundred one trillion, two hundred twenty-one billion, twelve thousand, twelve".