202101020201 has 4 divisors (see below), whose sum is σ = 202102014804. Its totient is φ = 202100025600.

The previous prime is 202101020197. The next prime is 202101020207. The reversal of 202101020201 is 102020101202.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 167055308176 + 35045712025 = 408724^2 + 187205^2 .

It is a cyclic number.

It is not a de Polignac number, because 202101020201 - 2² = 202101020197 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (202101020207) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 70280 + ... + 639641.

It is an arithmetic number, because the mean of its divisors is an integer number (50525503701).

Almost surely, 2^202101020201 is an apocalyptic number.

It is an amenable number.

202101020201 is a deficient number, since it is larger than the sum of its proper divisors (994603).

202101020201 is an equidigital number, since it uses as much as digits as its factorization.

202101020201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 994602.

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

Adding to 202101020201 its reverse (102020101202), we get a palindrome (304121121403).

The spelling of 202101020201 in words is "two hundred two billion, one hundred one million, twenty thousand, two hundred one".