202103324221 has 2 divisors, whose sum is σ = 202103324222. Its totient is φ = 202103324220.

The previous prime is 202103324183. The next prime is 202103324239. The reversal of 202103324221 is 122423301202.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 199134600025 + 2968724196 = 446245^2 + 54486^2 .

It is a cyclic number.

It is not a de Polignac number, because 202103324221 - 2¹¹ = 202103322173 is a prime.

It is a super-2 number, since 2×202103324221² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 202103324192 and 202103324201.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (202103384221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 101051662110 + 101051662111.

It is an arithmetic number, because the mean of its divisors is an integer number (101051662111).

Almost surely, 2^202103324221 is an apocalyptic number.

It is an amenable number.

202103324221 is a deficient number, since it is larger than the sum of its proper divisors (1).

202103324221 is an equidigital number, since it uses as much as digits as its factorization.

202103324221 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1152, while the sum is 22.

Adding to 202103324221 its reverse (122423301202), we get a palindrome (324526625423).

The spelling of 202103324221 in words is "two hundred two billion, one hundred three million, three hundred twenty-four thousand, two hundred twenty-one".