202101200001001 has 4 divisors (see below), whose sum is σ = 230972800001152. Its totient is φ = 173229600000852.

The previous prime is 202101200000969. The next prime is 202101200001017. The reversal of 202101200001001 is 100100002101202.

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 202101200001001 - 2⁵ = 202101200000969 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (202101200011001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14435800000065 + ... + 14435800000078.

It is an arithmetic number, because the mean of its divisors is an integer number (57743200000288).

Almost surely, 2^{202101200001001} is an apocalyptic number.

It is an amenable number.

202101200001001 is a deficient number, since it is larger than the sum of its proper divisors (28871600000151).

202101200001001 is an equidigital number, since it uses as much as digits as its factorization.

202101200001001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28871600000150.

The product of its (nonzero) digits is 8, while the sum is 10.

Adding to 202101200001001 its reverse (100100002101202), we get a palindrome (302201202102203).

The spelling of 202101200001001 in words is "two hundred two trillion, one hundred one billion, two hundred million, one thousand, one".