201220221201 has 4 divisors (see below), whose sum is σ = 268293628272. Its totient is φ = 134146814132.

The previous prime is 201220221197. The next prime is 201220221227. The reversal of 201220221201 is 102122022102.

201220221201 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 not a de Polignac number, because 201220221201 - 2² = 201220221197 is a prime.

It is not an unprimeable number, because it can be changed into a prime (201220221281) 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, 33536703531 + ... + 33536703536.

It is an arithmetic number, because the mean of its divisors is an integer number (67073407068).

Almost surely, 2^201220221201 is an apocalyptic number.

It is an amenable number.

201220221201 is a deficient number, since it is larger than the sum of its proper divisors (67073407071).

201220221201 is an equidigital number, since it uses as much as digits as its factorization.

201220221201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67073407070.

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 201220221201 its reverse (102122022102), we get a palindrome (303342243303).

The spelling of 201220221201 in words is "two hundred one billion, two hundred twenty million, two hundred twenty-one thousand, two hundred one".