10340402221 has 2 divisors, whose sum is σ = 10340402222. Its totient is φ = 10340402220.

The previous prime is 10340402209. The next prime is 10340402239. The reversal of 10340402221 is 12220404301.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9738926596 + 601475625 = 98686^2 + 24525^2 .

It is a cyclic number.

It is not a de Polignac number, because 10340402221 - 2²¹ = 10338305069 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10340402621) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5170201110 + 5170201111.

It is an arithmetic number, because the mean of its divisors is an integer number (5170201111).

Almost surely, 2^10340402221 is an apocalyptic number.

It is an amenable number.

10340402221 is a deficient number, since it is larger than the sum of its proper divisors (1).

10340402221 is an equidigital number, since it uses as much as digits as its factorization.

10340402221 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 384, while the sum is 19.

Adding to 10340402221 its reverse (12220404301), we get a palindrome (22560806522).

The spelling of 10340402221 in words is "ten billion, three hundred forty million, four hundred two thousand, two hundred twenty-one".