202021313201 has 4 divisors (see below), whose sum is σ = 202024800804. Its totient is φ = 202017825600.

The previous prime is 202021313189. The next prime is 202021313209. The reversal of 202021313201 is 102313120202.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 117717610000 + 84303703201 = 343100^2 + 290351^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-202021313201 is a prime.

It is a super-2 number, since 2×202021313201² (a number of 23 digits) contains 22 as substring.

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 202021313201.

It is not an unprimeable number, because it can be changed into a prime (202021313209) 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, 1655420 + ... + 1773261.

It is an arithmetic number, because the mean of its divisors is an integer number (50506200201).

Almost surely, 2^202021313201 is an apocalyptic number.

It is an amenable number.

202021313201 is a deficient number, since it is larger than the sum of its proper divisors (3487603).

202021313201 is an equidigital number, since it uses as much as digits as its factorization.

202021313201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3487602.

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 202021313201 its reverse (102313120202), we get a palindrome (304334433403).

The spelling of 202021313201 in words is "two hundred two billion, twenty-one million, three hundred thirteen thousand, two hundred one".