201221120120201 has 8 divisors (see below), whose sum is σ = 203051960776704. Its totient is φ = 199394129813760.

The previous prime is 201221120120179. The next prime is 201221120120231. The reversal of 201221120120201 is 102021021122102.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 201221120120201 - 2²² = 201221115925897 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 201221120120201.

It is not an unprimeable number, because it can be changed into a prime (201221120120231) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 962482520 + ... + 962691561.

It is an arithmetic number, because the mean of its divisors is an integer number (25381495097088).

Almost surely, 2^{201221120120201} is an apocalyptic number.

It is an amenable number.

201221120120201 is a deficient number, since it is larger than the sum of its proper divisors (1830840656503).

201221120120201 is a wasteful number, since it uses less digits than its factorization.

201221120120201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1925175031.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 201221120120201 its reverse (102021021122102), we get a palindrome (303242141242303).

The spelling of 201221120120201 in words is "two hundred one trillion, two hundred twenty-one billion, one hundred twenty million, one hundred twenty thousand, two hundred one".