201000121001 has 4 divisors (see below), whose sum is σ = 207483995904. Its totient is φ = 194516246100.

The previous prime is 201000120977. The next prime is 201000121043. The reversal of 201000121001 is 100121000102.

201000121001 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 a de Polignac number, because none of the positive numbers 2^k-201000121001 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 201000121001.

It is not an unprimeable number, because it can be changed into a prime (201000121081) 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, 3241937405 + ... + 3241937466.

It is an arithmetic number, because the mean of its divisors is an integer number (51870998976).

Almost surely, 2^201000121001 is an apocalyptic number.

It is an amenable number.

201000121001 is a deficient number, since it is larger than the sum of its proper divisors (6483874903).

201000121001 is an equidigital number, since it uses as much as digits as its factorization.

201000121001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6483874902.

The product of its (nonzero) digits is 4, while the sum is 8.

Adding to 201000121001 its reverse (100121000102), we get a palindrome (301121121103).

The spelling of 201000121001 in words is "two hundred one billion, one hundred twenty-one thousand, one".