201200421001 has 4 divisors (see below), whose sum is σ = 201221347600. Its totient is φ = 201179494404.

The previous prime is 201200420989. The next prime is 201200421041. The reversal of 201200421001 is 100124002102.

It is a happy number.

201200421001 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 201200421001 - 2¹⁷ = 201200289929 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (201200421041) 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, 10448871 + ... + 10468108.

It is an arithmetic number, because the mean of its divisors is an integer number (50305336900).

Almost surely, 2^201200421001 is an apocalyptic number.

It is an amenable number.

201200421001 is a deficient number, since it is larger than the sum of its proper divisors (20926599).

201200421001 is an equidigital number, since it uses as much as digits as its factorization.

201200421001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20926598.

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 201200421001 its reverse (100124002102), we get a palindrome (301324423103).

The spelling of 201200421001 in words is "two hundred one billion, two hundred million, four hundred twenty-one thousand, one".