3240040202221 has 2 divisors, whose sum is σ = 3240040202222. Its totient is φ = 3240040202220.

The previous prime is 3240040202153. The next prime is 3240040202233. The reversal of 3240040202221 is 1222020400423.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2350046076196 + 889994126025 = 1532986^2 + 943395^2 .

It is a cyclic number.

It is not a de Polignac number, because 3240040202221 - 2¹⁹ = 3240039677933 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 3240040202192 and 3240040202201.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3240040272221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1620020101110 + 1620020101111.

It is an arithmetic number, because the mean of its divisors is an integer number (1620020101111).

Almost surely, 2^{3240040202221} is an apocalyptic number.

It is an amenable number.

3240040202221 is a deficient number, since it is larger than the sum of its proper divisors (1).

3240040202221 is an equidigital number, since it uses as much as digits as its factorization.

3240040202221 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1536, while the sum is 22.

Adding to 3240040202221 its reverse (1222020400423), we get a palindrome (4462060602644).

The spelling of 3240040202221 in words is "three trillion, two hundred forty billion, forty million, two hundred two thousand, two hundred twenty-one".