201012212201221 has 4 divisors (see below), whose sum is σ = 201018946082944. Its totient is φ = 201005478319500.

The previous prime is 201012212201161. The next prime is 201012212201377. The reversal of 201012212201221 is 122102212210102.

201012212201221 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 201012212201221 - 2⁴¹ = 198813188945669 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201012212207221) 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, 3366896085 + ... + 3366955786.

It is an arithmetic number, because the mean of its divisors is an integer number (50254736520736).

Almost surely, 2^{201012212201221} is an apocalyptic number.

It is an amenable number.

201012212201221 is a deficient number, since it is larger than the sum of its proper divisors (6733881723).

201012212201221 is an equidigital number, since it uses as much as digits as its factorization.

201012212201221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6733881722.

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 201012212201221 its reverse (122102212210102), we get a palindrome (323114424411323).

The spelling of 201012212201221 in words is "two hundred one trillion, twelve billion, two hundred twelve million, two hundred one thousand, two hundred twenty-one".