201221120012 has 12 divisors (see below), whose sum is σ = 384149411016. Its totient is φ = 91464145440.

The previous prime is 201221120011. The next prime is 201221120039. The reversal of 201221120012 is 210021122102.

It is not an unprimeable number, because it can be changed into a prime (201221120011) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2286603593 + ... + 2286603680.

It is an arithmetic number, because the mean of its divisors is an integer number (32012450918).

Almost surely, 2^201221120012 is an apocalyptic number.

201221120012 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

201221120012 is a deficient number, since it is larger than the sum of its proper divisors (182928291004).

201221120012 is a wasteful number, since it uses less digits than its factorization.

201221120012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4573207288 (or 4573207286 counting only the distinct ones).

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

Adding to 201221120012 its reverse (210021122102), we get a palindrome (411242242114).

The spelling of 201221120012 in words is "two hundred one billion, two hundred twenty-one million, one hundred twenty thousand, twelve".