201220001201 has 4 divisors (see below), whose sum is σ = 211810527600. Its totient is φ = 190629474804.

The previous prime is 201220001179. The next prime is 201220001209. The reversal of 201220001201 is 102100022102.

It is a happy number.

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 201220001201 - 2¹⁴ = 201219984817 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (201220001209) 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, 5295263171 + ... + 5295263208.

It is an arithmetic number, because the mean of its divisors is an integer number (52952631900).

Almost surely, 2^201220001201 is an apocalyptic number.

It is an amenable number.

201220001201 is a deficient number, since it is larger than the sum of its proper divisors (10590526399).

201220001201 is a wasteful number, since it uses less digits than its factorization.

201220001201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10590526398.

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 201220001201 its reverse (102100022102), we get a palindrome (303320023303).

The spelling of 201220001201 in words is "two hundred one billion, two hundred twenty million, one thousand, two hundred one".