201221120011012 has 48 divisors (see below), whose sum is σ = 377501355137088. Its totient is φ = 93515404308480.

The previous prime is 201221120011001. The next prime is 201221120011019. The reversal of 201221120011012 is 210110021122102.

It is not an unprimeable number, because it can be changed into a prime (201221120011019) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 29581914 + ... + 35742577.

It is an arithmetic number, because the mean of its divisors is an integer number (7864611565356).

Almost surely, 2^{201221120011012} is an apocalyptic number.

It is an amenable number.

201221120011012 is a deficient number, since it is larger than the sum of its proper divisors (176280235126076).

201221120011012 is a wasteful number, since it uses less digits than its factorization.

201221120011012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65325076 (or 65325074 counting only the distinct ones).

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

Adding to 201221120011012 its reverse (210110021122102), we get a palindrome (411331141133114).

The spelling of 201221120011012 in words is "two hundred one trillion, two hundred twenty-one billion, one hundred twenty million, eleven thousand, twelve".