202100221001 has 16 divisors (see below), whose sum is σ = 237755758464. Its totient is φ = 168208095744.

The previous prime is 202100220989. The next prime is 202100221007. The reversal of 202100221001 is 100122001202.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 202100221001 - 2³⁰ = 201026479177 is a prime.

It is not an unprimeable number, because it can be changed into a prime (202100221007) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2771975 + ... + 2843948.

It is an arithmetic number, because the mean of its divisors is an integer number (14859734904).

Almost surely, 2^202100221001 is an apocalyptic number.

It is an amenable number.

202100221001 is a deficient number, since it is larger than the sum of its proper divisors (35655537463).

202100221001 is an equidigital number, since it uses as much as digits as its factorization.

202100221001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5616080.

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

Adding to 202100221001 its reverse (100122001202), we get a palindrome (302222222203).

The spelling of 202100221001 in words is "two hundred two billion, one hundred million, two hundred twenty-one thousand, one".