202120201001 has 4 divisors (see below), whose sum is σ = 202432597632. Its totient is φ = 201807804372.

The previous prime is 202120200991. The next prime is 202120201027. The reversal of 202120201001 is 100102021202.

It is a happy number.

202120201001 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 202120201001 - 2¹⁰ = 202120199977 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (202120204001) 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, 156197345 + ... + 156198638.

It is an arithmetic number, because the mean of its divisors is an integer number (50608149408).

Almost surely, 2^202120201001 is an apocalyptic number.

It is an amenable number.

202120201001 is a deficient number, since it is larger than the sum of its proper divisors (312396631).

202120201001 is an equidigital number, since it uses as much as digits as its factorization.

202120201001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 312396630.

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

Adding to 202120201001 its reverse (100102021202), we get a palindrome (302222222203).

The spelling of 202120201001 in words is "two hundred two billion, one hundred twenty million, two hundred one thousand, one".