10540352322421 has 2 divisors, whose sum is σ = 10540352322422. Its totient is φ = 10540352322420.

The previous prime is 10540352322377. The next prime is 10540352322427. The reversal of 10540352322421 is 12422325304501.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8934784570321 + 1605567752100 = 2989111^2 + 1267110^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-10540352322421 is a prime.

It is a super-2 number, since 2×10540352322421² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10540352322427) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5270176161210 + 5270176161211.

It is an arithmetic number, because the mean of its divisors is an integer number (5270176161211).

Almost surely, 2^{10540352322421} is an apocalyptic number.

It is an amenable number.

10540352322421 is a deficient number, since it is larger than the sum of its proper divisors (1).

10540352322421 is an equidigital number, since it uses as much as digits as its factorization.

10540352322421 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 57600, while the sum is 34.

Adding to 10540352322421 its reverse (12422325304501), we get a palindrome (22962677626922).

The spelling of 10540352322421 in words is "ten trillion, five hundred forty billion, three hundred fifty-two million, three hundred twenty-two thousand, four hundred twenty-one".