201201112221 has 4 divisors (see below), whose sum is σ = 268268149632. Its totient is φ = 134134074812.

The previous prime is 201201112207. The next prime is 201201112249. The reversal of 201201112221 is 122211102102.

201201112221 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-201201112221 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 201201112221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201201112261) 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 3 ways as a sum of consecutive naturals, for example, 33533518701 + ... + 33533518706.

It is an arithmetic number, because the mean of its divisors is an integer number (67067037408).

Almost surely, 2^201201112221 is an apocalyptic number.

It is an amenable number.

201201112221 is a deficient number, since it is larger than the sum of its proper divisors (67067037411).

201201112221 is an equidigital number, since it uses as much as digits as its factorization.

201201112221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67067037410.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 201201112221 its reverse (122211102102), we get a palindrome (323412214323).

The spelling of 201201112221 in words is "two hundred one billion, two hundred one million, one hundred twelve thousand, two hundred twenty-one".